Here are a few questions about computers I’ve received recently from people like you, and my answers. I have edited and restated the questions a bit, for readability.

I have a PC with Windows XP, which I bought because my computer guru said to stay away from Vista. I read your column saying upgrading from XP to the new Windows 7 will be much more cumbersome than doing so from Windows Vista. So, what should I do now? Upgrade to Vista for a while so I can then move more smoothly to 7? Or wait, buy a separate Windows 7 computer in the fall, and just transfer my files and applications from the XP computer?

Putting budget considerations aside, I think the latter course would make more sense. The new machine with Windows 7 preloaded will probably give you smoother performance than one you upgraded twice to new operating systems in a matter of months. But, bear in mind that you will have to reinstall all your applications on the new Windows 7 computer, and that, depending on the terms of the applications’ licenses, you might even have to buy new copies. On the other hand, if you do the chain of upgrades, and don’t buy a new machine, you may be able to avoid this application problem, or at least much of it.

I appreciated your review of the Clickfree automatic backup drive. Does the backup it creates include the various folders and subfolders for data such as photos, or does it just create a huge single list?

The Clickfree software is primarily designed to back up, display and restore your files by their types — photos, music, text, email, spreadsheets, etc. Once it has performed a backup it lets you view and restore your files by these types. However, it will display the tree of all your folders and allow you to specify where it should search for these files. It also allows you to back up and restore entire folders, such as your My Documents folder, regardless of their contents. Detailed information, including a downloadable user manual, is available in the Support section of clickfree.com.

I am planning to buy one of the products you recently reviewed — a Western Digital My Book — and attach it directly to a port on my Internet router. Can I install antispyware and antivirus programs on the drive? If not, how will the data on this drive be protected?

Nothing is perfectly secure. The bad guys are clever, and you never say never. However, since this product isn’t an actual PC running Windows, viruses and spyware programs can’t likely run directly on it. Still, if one of your computers contains malicious software, and it can see the contents of the network drive, then the data on the drive could be endangered. I know of no way to install or run security programs on the drive. But the security software on your PC may protect the drive, if it is able to handle external drives across a network. Also, the firewall built into your network router will help. The product has some security measures built in, such as encrypting files when you use the optional feature that allows you to access the drive’s contents across the Internet.

• You can find Mossberg’s Mailbox, and my other columns, online free of charge at the new All Things Digital Web site, http://walt.allthingsd.com.

In the new version of Microsoft Office, I cannot find a “favorites” capability in the Open dialog box. In my older version, when I began to open a document, I had a box on the left called “Favorites” that I could invoke to find common file locations. Did they really kill this very useful feature?

No, but they changed the way you make it visible in Office 2007. You can get back your “Favorites” category by right-clicking the bar at the left-hand side of the Open dialog. From the menu that appears, click on “Add Favorites,” and your Favorites category should appear in the left-hand bar, and stay there.

If I have McAfee security software, do I need an antispyware program as well?

Everyone running a Windows computer, even a virtual Windows computer on a Mac, should have antispyware software. In some ways, spyware is a worse security problem than viruses, and can lead to identity theft.

McAfee has made many types and versions of security software over the years. Some, especially recent versions of the company’s comprehensive products, include antispyware protection. Check your version to make sure it includes this capability. If it doesn’t, you will either need to upgrade to a more comprehensive suite, or obtain a separate anti-spyware product.

When my friend put a Spike Jones CD of mine into his Mac to import it using iTunes, the CD was misidentified with an embarrassing title. What would cause such a thing to happen? Does iTunes go out to the Web looking for album names, instead of going by what’s on a disk?

Yes. Music programs like iTunes, and all its major competitors, can’t identify a disk directly. So they rely on online databases to identify CDs. Each CD contains a hidden code that the database providers quickly match up with their huge catalogs of CDs to provide the album title, artist, date, track list and other information. But, sometimes, especially when the CD is relatively obscure, the databases are wrong and yield erroneous information. When that happens, you have to type in the information by hand.

You can find Mossberg’s Mailbox, and my other columns, online free of charge at the new All Things Digital Web site, http://walt.allthingsd.com.

I need some help sending videos to others. It seems that every video I try to send in various ways is always too large. I’ve tried to use a program that works with Outlook to compress the email attachment, but it’s always still too large. Is there a solution other than uploading them onto YouTube or something similar?

I suggest you try one of the services that specifically exist to transmit files that are too large for email. They typically work by having you upload the files to their servers, which, unlike YouTube, don’t expose them to the world. Seconds after you upload these files, your recipients receive an email that includes a specific link to the file you uploaded. The email is small because it includes only the link, not the file itself. The recipient clicks on the link, and the file is downloaded to his or her computer.

The service I use for this is called YouSendIt, and can be accessed at yousendit.com. It works in all the major Web browsers, and on both Windows and Macintosh computers. The company has a free plan that covers files of up to 100 megabytes in size, and allows each file to be downloaded up to 100 times, or up to a gigabyte of total downloads each month. For $10 a month, you get a maximum file size of two gigabytes, 500 downloads per file, and a monthly maximum limit of 40 gigabytes.

In my experience, YouSendIt works well. It can be used directly from within a browser, or via a small program called YouSendIt Express, that lives on your computer and handles large files faster than the browser version does. YouSendIt also offers an Outlook plug-in that can automatically route large downloads via the service rather than through regular email, though I haven’t tested this plug-in.

Our daughter is heading off to college this fall. She will be an art/graphic-design major, and the school recommended that she buy an Apple MacBook. I’m not sure if she should get what the college calls the “midlevel MacBook” or the “advanced MacBook.” The only differences are a slightly faster processor, a hard disk that is 40 gigabytes larger, and a “SuperDrive” for CDs and DVDs rather than a “Combo” drive. The price difference is $90. Which should we buy?

Either machine would be fine, and a lot depends on your budget, since college itself is of course very expensive. But I think, in this case, the extra $90 would be worth paying. This has nothing to do with the processor speed, which she probably wouldn’t even notice. But, if she is going to be creating a lot of graphics files, which can be large, the extra hard-disk space could be important.

The same goes for the CD/DVD drive options. The “SuperDrive” is Apple’s term for a drive that can create both DVDs and CDs, while the “Combo” drive can create only CDs. (Both drives can play both types of disks.) For someone who is producing large files, the ability to create DVDs can be handy, since DVDs have much higher capacities than CDs.

My laptop has been infected by rogue viruses, posing as antispyware programs, that I can’t get rid of. When I go on Google, I find a number of sites that claim to offer free software that will get rid of them, but I am reluctant to download anything onto my machine from a source that I am not sure of. What’s a reliable program that will do that job?

I would immediately buy a genuine, legitimate commercial antispyware program, install it and run it. The best ones I know of are Spyware Doctor by PC Tools, at pctools.com, and Spy Sweeper from Webroot, at Webroot.com. Each costs $30, but that price can save you a lot of heartache.

You can find Mossberg’s Mailbox, and my other columns, online, free, at the new All Things Digital Web site, http://walt.allthingsd.com.

Do I need antivirus or antispyware software on a Macintosh running the Leopard operating system?

The Macintosh isn’t inherently invulnerable to malicious software. In fact, last week it was reported that there is a new scam on the Web that can plant a malicious “Trojan horse” program on the Mac. However, this is a rare event. There have been practically no viruses, spyware or other malicious programs written for the Macintosh that have actually spread outside the laboratory.

For that reason, most Mac users don’t run security software, and security software companies don’t make much of an effort to sell it for Macs. I don’t believe it is necessary, so far, for all except the most paranoid (and those who run Windows on their Macs). In fact, freedom from the burdens of running and updating security software has been one of the Mac’s big advantages.

Even the new Trojan Horse apparently relies on tricking the user, rather than on sneaking through holes in the Mac operating system. According to reports, to get infected you must go to a pornography site, and agree to download a program allegedly needed to view the porn. Next, the Mac will require that you type in your administrator ID and password to complete the installation, thus agreeing to install the program a second time. If you do all that, you get a program that supposedly redirects your Web browser to bogus Web sites. My advice: even if you frequent porn sites, don’t agree to download any programs from them (that goes for Windows users as well).

Some interpret the appearance of this new Trojan Horse as a sign that the Mac’s increasing market share will begin to attract a flood of viruses and spyware, and that Mac users will soon have to start running security software. If it happens, and the threats are more insidious than the latest one, I will be ready to change my recommendation. But not yet.

In reply to a question last week, you mentioned that there are free security programs available for Windows. Could you please suggest where to download such alternatives?

There are a number of them, but ones that I like are free, basic antivirus and antispyware programs called AVG from a company called Grisoft, which also makes more elaborate security software. You can download these programs at free.grisoft.com/doc/5390/us/frt/0.

I don’t have Microsoft PowerPoint but I occasionally get PowerPoint files as email attachments. Somewhere I read that one can download a free PowerPoint program so you can read these files. Can you help me with this, please?

I don’t know of any free versions of PowerPoint, but Microsoft does offer a free program that will let you view, but not create or edit, PowerPoint files. You can download it here.

You can find Mossberg’s Mailbox, and my other columns, online for free at the new All Things Digital Web site, http://walt.allthingsd.com.

Write to Walter S. Mossberg at mossberg@wsj.com

I currently spend about $50 to $60 per year for Norton Security software. Is this necessary when Windows XP has its own security built into the operating system?

Windows XP doesn’t include antivirus or antispyware programs, so you definitely need some sort of add-on security software. If you don’t want to pay for it, there are free alternatives available.

How do we determine when to purchase a new PC? Our current Dell is about five years old. I’m feeling a little worried because I have my music and photos on the computer and don’t want to lose them.

There’s no universal answer to your question. In general, I don’t believe people should replace computers that are working well for them just because they reach a certain age. On the other hand, five years is pretty old for a PC. At that age, the odds increase that the hard disk may develop problems, and that newer versions of the software you like will require hardware upgrades that may cost more than you want to invest in an older machine.

Assuming your Dell is working fine, that you aren’t a power user, and that your music and photo activities are simple and basic, there’s probably no urgent need to replace the PC. But, to assuage your concern about “losing” your pictures and music, you might back up those precious files to an external hard disk or an online backup service.

Last week, you compared the start-up time of Windows Vista to Apple’s new Leopard operating system, and found Vista to be much slower. But you used different laptops for each. What would the numbers be on the same Macintosh running the two operating systems?

I ran the tests again on a single computer, a fairly new Apple iMac, which can be started up, and restarted, in either Vista or Leopard. I used the Mac’s Boot Camp feature, in which only one operating system is running at a time, has its own dedicated portion of the hard disk and fully controls the hardware. The machine uses an Intel processor and other key components commonly found on Windows machines, and runs Windows just like a Dell or any standard Windows PC, without any involvement from the Mac operating system.

This Vista installation doesn’t include any of the speed-robbing trial software commonly included by PC makers, though it does have security software from Symantec. However, the test results were very similar — Leopard started and restarted much more quickly than Vista did.

In this simple test, I timed both operating systems from a cold start and a restart until the computer was fully ready for operation, with the hard disk quiet and the network connection established. The cold start, beginning with the computer completely off, took Leopard 46 seconds, but took Vista one minute and 42 seconds. A restart, beginning with the computer running an email program, the Firefox Web browser, and Microsoft Word, took one minute and two seconds for Leopard, and three minutes and 17 seconds for Vista.

You can find Mossberg’s Mailbox, and my other columns, online for free at the new All Things Digital Web site, http://walt.allthingsd.com.

Write to Walter S. Mossberg at mossberg@wsj.com

There’s no other major item most of us own that is as confusing, unpredictable and unreliable as our personal computers. Everybody has questions about them, and we aim to help.

Here are a few questions about computers I’ve received recently from people like you, and my answers. I have edited and restated the questions a bit, for readability. This week my mailbox contained questions about DOS in Windows Vista, antispyware programs for Vista and the compatibility of the new Microsoft Office with older versions.

I still use several old DOS programs. They work fine in Windows XP, which I believe includes DOS. But will they still work in the new Windows Vista?

Yes, they probably will. Actually, DOS, the old Microsoft operating system that preceded Windows, hasn’t been included in Windows for years. The early versions of Windows were built on top of DOS, so DOS programs could run as they always did.

But Windows XP didn’t really include DOS. Instead, it included some underlying code that allowed old DOS programs to run. Windows Vista uses this same approach. Microsoft says it has even run the DOS version of VisiCalc, the famous pioneering spreadsheet program, on Vista.

Certain DOS programs that require something called “real mode” — direct access to the computer’s hardware — wouldn’t run properly in XP and won’t run properly in Vista, either. But, if your DOS programs run fine in XP, they will likely run fine in Vista.

I recently purchased a new Windows computer with the Windows Vista Home Premium operating system. Do I need to install a third-party Internet security program or is the included Microsoft Security Center adequate?

Despite its name, the Security Center isn’t actually a security program. It is a monitoring feature of Windows that tells you the status of your security programs. Vista does include two important security programs: a firewall; and an antispyware program called Windows Defender. It doesn’t include an antivirus program. I strongly advise you to buy and install a Vista-compatible antivirus program. You may also want to consider buying an antispyware program that is rated higher than the included Windows Defender, such as Spy Sweeper (webroot.com) or Spyware Doctor (pctools.com).

I teach college courses online. My laptop is three years old and I was thinking of buying a new one this year. I am worried about the compatibility of the new Microsoft Office with older versions. Many students are using older computers to do their homework. I need to be able to open all documents they send me and vice versa.

It is true that the standard file format in the new Office 2007 can’t be read by older versions of Office, unless the users of those older versions install conversion software. However, there are two reasons why this shouldn’t be a problem with your new laptop.

First of all, buying a new laptop doesn’t mean you also have to buy or use the latest version of Microsoft Office. The 2003 version of Office for Windows can be installed and used on a new Windows Vista laptop, if you still have the original disks. Secondly, even if you do switch to the new Office 2007, you can set it to always save your files in the older formats.

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Because of the volume of e-mail I receive, I can’t routinely answer individual questions by e-mail, or consult on individual problems or purchasing decisions. I read all questions I receive and select three each week to answer in the column.

Corrections & Amplifications:

The anti-spyware program produced by PC Tools is named Spyware Doctor. In an earlier version of this column, the product was mistakenly referred to as Spy Doctor.

Write to Walter S. Mossberg at mossberg@wsj.com

Here are a few questions about computers I’ve received recently from people like you, and my answers. I have edited and restated the questions a bit, for readability. This week my mailbox contained questions about deleting groups of emails on a Treo, eliminating unnecessary background programs and sending files from a Mac to a Windows PC.

How do I delete groups of email messages quickly on the Treo smartphone?

It depends on which Treo model you are using and which email program you are using. If it’s a Windows-based Treo, like the Treo 700w or 700wx, you can’t delete large groups of messages very quickly in the built-in email program. You have to manually select large groups of messages and then use the delete function. If it’s a Treo model that uses the Palm operating system, like the Treo 700p or the 650, it is usually possible to do this automatically with a few keystrokes, though the method varies depending on which email program you are using.

If you are using my favorite Treo email program, SnapperMail, on a Palm-based Treo, and you want to delete all or many of the messages in a mailbox, such as your inbox, you can do so with one hand and as few as three keystrokes. This “Purge” command allows you to delete all the messages, or only messages older than various periods of time you can set. You don’t have to use the stylus, or manually select any messages, or use two hands. You just press the menu button, the “T” key, and the center button on the navigation pad.

When I open the Windows Task Manager, I note that there are anywhere from 52 to 57 “processes” operating on my PC. I am sure this is slowing things down. However, the names of the programs are virtually impossible for a nontechie to understand so I don’t want to eliminate any of them for fear of causing major damage to the operating system. Short of calling a service technician, is there a way for me to find out which processes can be safely shutdown and/or eliminated?

This is one of the major banes of using Windows — every program and even some Web sites think it’s OK to install and run in the background all sorts of little, and not-so-little programs, which create the “processes” you are seeing. Some of them may even be spyware and adware. And, yes, they do slow down your computer.

Unfortunately, I don’t know of any quick, easy way a mainstream, nontechie user can tell which ones can be safely shut down. There are programs like Startup Cop that help you decide which unseen programs you should allow to launch when your computer starts, but they don’t necessarily cover stuff that launches after start-up. And there are Web sites, like processlibrary.com and answersthatwork.com, which let you look up a process to see what it does, but that is a laborious process. The latter Web site offers a $29 program called the Ultimate Troubleshooter for managing all these processes, but it’s pretty intimidating for a nontechie.

Antivirus and antispyware programs can shut down some malicious background processes, or stop them from loading in the first place. But many of the resource-draining “processes” you are finding may be from “legitimate” programs on your PC that simply want to hog the computer.

If I switch from Windows to a Macintosh, will my colleagues be able to read any Mac files I send them?

There is no such thing as a “Mac file.” The Macintosh today can create and read all the major standard types of files that Windows PCs use. For instance, photos in the common JPG format; music files in the common MP3 format; Adobe PDF files; text files; and many other types of files can simply be moved between Windows and Mac computers with no conversion necessary. Microsoft Office files, like Word, Excel and PowerPoint documents, can also be shared between the two platforms, without conversion, if you have the Office program suite on both ends. The Mac’s built-in email program, Apple Mail, even has a setting for sending “Windows Friendly” attachments.

There are some specific programs on both platforms that can create proprietary file types not easily opened, or opened at all, on the other platform. Most annoyingly, the Windows and Mac versions of Quicken don’t share a common file format. But now that the new Macs can also run Windows, you can always launch Windows on your Mac in a pinch to run a program that can handle some Windows-only file type.

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Because of the volume of email I receive, I can’t routinely answer individual questions by email, or consult on individual problems or purchasing decisions. I read all questions I receive and select three each week to answer in the column.

Write to Walter S. Mossberg at mossberg@wsj.com

Here are a few questions about computers I’ve received recently from people like you, and my answers. I have edited and restated the questions a bit, for readability. This week my mailbox contained questions about antispyware software, Powerline adapters and the Mac mouse button.

I set my parents up with a new Dell PC, and included antispyware software that I run periodically to clean up the computer. I recently discovered they had more than 200 instances of spyware on the machine. This may be because my 81-year-old father surfs porn sites ALL the time (this isn’t a joke). Is there any way to keep his computer bulletproof and safe?

Assuming you can’t dissuade him from the porn sites, which are common sources of spyware and adware, your best option is to switch to a type of antispyware program that blocks the installation and operation of spyware and adware programs as it is happening, rather than waiting until they are installed to clear them out. The best program I have tested of this type is Spy Sweeper from Webroot, but there are others. These types of programs usually aren’t free, but their prices are modest and they would allow your dad to spend his golden years as he sees fit.

Last week, you recommended Powerline adapters that can route an Internet connection over the regular electrical wires in your house. I have two questions about these products. If a home has two different circuit-breaker boxes, can adapters plugged into outlets connected to the different boxes communicate? And, could a neighbor who shares an outside electrical line potentially spy on my Internet usage?

I am not an expert on electrical systems, and neither of these circumstances applied to my tests. So I asked Netgear, the manufacturer of the XE104 adapters I reviewed last week.

The company says that if the two adapters are plugged into outlets that are on totally independent electrical “loops,” they won’t be able to communicate, because the electrical current itself wouldn’t pass between the loops. However, Netgear claims it is “extremely rare” for a home built after 1950 to have two wholly independent loops, even if they have two different circuit-breaker boxes. The company says that, at least in newer homes, separate circuit boxes are often linked.

However, I would add that electrical layouts vary so much that there is no guarantee that any two electrical outlets will have a connection that will work with Powerline adapters. I believe it will work in the vast majority of cases, but not all. In my home, which is 36 years old, the adapters did work between rooms with different circuit-breaker boxes.

On the security issue, the company says it is theoretically possible, but very unlikely, for a neighbor on your same outside electrical line to spy on a network running over your interior electrical wires. To do so, Netgear says, the neighbor’s house and yours would have to lack a filter between them, and those are commonly present. Even then, a nosy neighbor would have to know that you have a Powerline network — and buy a compatible adapter — in order to access your network.

This is likelier, but still not very probable, in an apartment building, because circuits in such buildings are often shared. The company does include optional encryption software for such situations, so that even if a neighbor can snoop on you, he wouldn’t be able to decipher your network traffic.

I am thinking of buying an Apple MacBook, but I notice it only has one button below the touch pad, and no obvious scrolling control. Without buying and using a mouse, how can you right-click and scroll on a Mac laptop?

The Mac operating system and Apple software do in fact support right-clicking, displaying the same sort of pop-up menus that Windows does. However, on a Mac laptop with the single button, the traditional method for right-clicking has been a clumsy one: holding the Control key while clicking the button.

Now, the latest Mac laptops have a much easier and cleverer method for right-clicking: you just place two fingers on the track pad and click the button. It’s fast and easy, though still not as good as if Apple abandoned its odd mouse dogma and simply built dual buttons into its laptops.

Also, the new Mac laptops have a method for scrolling that I find superior to the methods common on Windows laptops: you just place two fingers on the touch pad and drag them up or down together. It quickly becomes second nature.

* * *

Because of the volume of email I receive, I can’t routinely answer individual questions by email, or consult on individual problems or purchasing decisions. I read all questions I receive and select three each week to answer in the column.

Write to Walter S. Mossberg at mossberg@wsj.com

Boot Camp may never be final, because Apple plans to roll its functionality into the forthcoming new version of its OS X operating system, called Leopard, which is due out early in 2007, around the same time Microsoft plans to ship Windows Vista. I assume Apple will stop offering Boot Camp as a separate program around that time. The company states that “Boot Camp Beta is preview software licensed for use on a trial basis for a limited time.” That implies to me that it will likely be discontinued when Leopard comes out. This doesn’t necessarily mean existing installations of Windows on Macs will stop functioning, just that new downloads won’t be available.

I do believe that Leopard will allow Vista to run on Macs. However, just like regular Windows PCs, Macs running Vista will be able to use all of its features only if their hardware specs are hefty enough. My quick and dirty assessment is that the Intel-based iMac, MacBook Pro and Mac mini should be able to do so, but only time will tell.

I have a home network of three PCs. Do I have to download antivirus protection software separately for each computer? What about antispyware software?

Yes, you do. Antivirus and antispyware programs work on a computer-by-computer basis. You can’t just install them on your main PC and expect that they will protect all the other machines on your network.

Which pop-up blockers do you recommend?

You don’t really need a separate pop-up blocker anymore. The latest versions of all the major browsers — Internet Explorer, Firefox and Safari — have built-in pop-up blockers. They aren’t perfect, but they work pretty well. You can turn on the blocking functionality from the preferences or options menus. If you need something more, and you are a Windows user, you can download the Google toolbar, which includes a good pop-up blocker. It can be downloaded at toolbar.google.com.

Here are a few questions about computers I’ve received recently from people like you, and my answers. I have edited and restated the questions a bit, for readability. This week my mailbox contained questions about converting financial records from a PC to a Mac, scheduling anti-spyware scans and burning home videos in VCD format.

If you have a question, send it to me at mossberg@wsj.com, and I may select it to be answered here in Mossberg’s Mailbox.

I am thinking of converting to an Apple machine, to replace my ancient Dell. However, all my financial records are in the Windows version of Quicken, and I need to keep using Quicken to have access to many years of records. I recall you writing earlier that Quicken was one of the products that didn’t convert well to a Macintosh environment. Do you still feel that would be the case?

There is a Macintosh version of Quicken. However, unlike most other software publishers, Intuit, the maker of Quicken, chose to create a Macintosh edition that is very different from its Windows product and uses a different file format. It is possible to convert Windows Quicken files to work on the Mac version, and some readers have reported it went well. But many more have reported problems with the process, which is very time-consuming and can be error-prone. Therefore, I regard Quicken on the Mac as best for somebody who is starting fresh with financial software, and can’t recommend it for somebody like you, who is converting from the Windows version.

As an alternative, you could keep around your old Windows PC for using Quicken. Or, you could try a program called Moneydance (www.moneydance.com), which has compatible versions for both Windows and Mac, claims to be completely portable between platforms and claims to import Quicken data with ease. I haven’t tested Moneydance and can’t verify these claims, or say how it compares with Quicken. But there’s a free trial available.

You suggested running anti-spyware and anti-virus scans nightly. Is there some way to arrange these to run automatically?

Yes. Most such programs have a built-in scheduler where you can specify a frequency and a time of day — say, every day at 4 a.m.

I transfer my home videos from a camcorder and burn them into CDs in the VCD format. My problem is that the video quality deteriorates significantly. The movie looks like an old home video. How do I improve the quality?

It’s difficult because of the format you are using. The VCD format was designed to squeeze large video files, which would normally require the capacity of a DVD disk, into the much smaller space available on a CD. To accomplish this, the format encodes the video at much lower quality than DVDs typically use. As a result, home videos on VCDs can look much worse than they do on camcorder tapes, or than they would if you burned them to DVD, in the format common on DVDs. So, if video quality is important to you, the best suggestion I have is to buy a DVD burner.

Write to Walter S. Mossberg at mossberg@wsj.com