A: That’s right. It’s a characteristic of Android, the Droid’s operating system made by Google, and it’s something I noted as a weakness when I reviewed the first Android phone over a year ago.

Even though the Droid comes with 16 gigabytes of memory, in the form of a removable card, apps can’t be stored on this memory card. They must be stored in a special area of internal memory, which in the case of the Droid totals only a measly 256 megabytes, about a fourth of one gigabyte. The memory card is reserved instead for things like documents, music, videos and pictures. That limits the total number of apps the phone can hold at any one time.

Google says the amount of internal memory allotted for apps is up to the hardware makers, and notes that the Droid has twice as much as the original Android phone. It also says that makers of complex apps that use things like graphics that are ancillary to the core app itself could theoretically offload these files to the memory cards.

But users of Apple’s competing iPhone can devote nearly all of its 16 gigabytes of memory to storing third-party apps, allowing many more apps to be stored on the phone.

I have all my data (addresses, calendar, notes) stored on my Palm Zire. I’d like to get an iPod Touch, but can’t figure out how to transfer the Palm calendar. Can you help? Or, do you know of any other “smart” handheld that will allow me to import my Palm data and give me Internet/email access?

A: There are various workarounds for doing the transfer to an iPod Touch, but, since you ask, there is another smart phone with great Internet capabilities that comes with a way to do it simply and directly: the Palm Pre. It’s based on a new and different operating system than your Zire is, called webOS, and is designed to sync with wireless contact and calendar sources rather than desktop programs.

But Palm has developed a one-time, one-way utility for transferring data from desktop software used by an older Palm to one of the wireless calendar and contact services with which the Pre was designed to sync. More information is at: http://bit.ly/2ivFI.

I want to buy a new computer and I really like the new iMac with the 27″ screen. I am 72 years old, which is one of the reasons I want the larger screen. Please tell me if you think my buying this iMac is a good idea. Is there some negative aspect of the iMac that I should be aware of?

A: I gave the new iMac with the huge screen a positive review, so I obviously think it’s a good computer. But, if by mentioning your age you mean to imply that you have vision issues, you should be aware that the new iMac’s screen isn’t just physically large, but is high resolution.

That allows it to pack a lot more content onto the screen, but, depending on what program you’re using, it can make the text small. Word processors, email programs and Web browsers usually allow you to enlarge text, but not all programs do.

The Mac itself has a system-wide zooming feature, but that makes some tasks harder to work with. I recommend you go to a store and play with the big iMac for a while to make sure you feel comfortable with its screen resolution.

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

A: Sadly, Microsoft killed Outlook Express—its free, fast and simple Windows email program—long before Windows 7 came out. In Vista, it was replaced by something called Windows Mail. Now, there’s no email program at all built into Windows 7, unless a PC maker chooses to include one. But Microsoft offers for download a free product called Windows Live Email that is the latest successor to Outlook Express. You can get it, alone or as part of a suite of free “Essentials” programs that used to be routinely part of Windows, at: windowslive.com/desktop.

I was told that Apple is developing its own version of the Kindle e-book reader. I wanted to purchase a Kindle for Christmas, but now I’m not sure whether I should wait for an Apple version.

A: I have never heard any Apple official say or hint that the company is developing a direct competitor for the Kindle, or is planning to make any dedicated e-book reader. What you may be referring to is that some Web sites have been speculating that the much-rumored forthcoming Apple touch-controlled tablet would be mainly intended to be an e-book reader. I haven’t any evidence of this either.

The iPhone and iPod Touch already can run a free Kindle app from Amazon that allows you to read Kindle e-books on those devices without needing to own a Kindle itself. And Barnes & Noble, which has also announced a dedicated e-reader, has a similar iPhone app. So I assume that any general-purpose Apple tablet would likely be able to run such an app as well and function as an e-reader—along with performing other tasks.

But that’s different than producing a dedicated reader with a screen and controls designed primarily for book reading and a companion electronic book store, something Apple currently lacks. It’s entirely possible Apple is going into the e-book business, but I know of zero hard evidence that this is the case.

Do you have any recommendations about switching an existing 64-bit laptop from Vista to Windows 7? I totally dislike Vista but I don’t know if the switch can be done.

A: Yes, it can, in most cases, unless your PC’s manufacturer for some reason isn’t supporting or recommending the upgrade of your particular model. Just make sure you get the comparable version of Windows 7 (say, 64-bit Windows 7 Home Premium if you are currently using 64-bit Vista Home Premium) so you can do a direct, in-place upgrade that will allow your programs and files to remain in place.

You can also do an in-place upgrade if you opt to move up to the costlier Ultimate version. I would also advise backing up your irreplaceable personal files before you begin the process.

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

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

I have a vision problem and can barely read low-contrast print, even the light colors on your Web site. Any ideas for how I and others can solve this problem? I use a Mac and the Firefox Web browser.

A: If your Mac is running the Leopard or Snow Leopard operating systems, you can use an onscreen slider control or keyboard commands to enhance the contrast. You can even switch the display to white-on-black, which really boosts the effect. This works system-wide. These settings are found in System Preferences, under the Universal Access preference, in the tab called “Seeing,” in the section called “Display.”

The new Windows 7 also has a similar feature that applies a “high contrast theme” when you press a certain key combination. It can be enabled or disabled in the Control Panel, under Ease of Access. You click on “Ease of Access Center,” and then “Make the computer easier to see.”

Where can I download the Windows 7 Home Premium upgrade edition for my Vista Home Premium computer?

A: Windows 7 can be downloaded at http://store.microsoft.com/home.aspx. And, after you’ve installed it, you can upgrade to higher versions anytime, if you like, for a fee. This is called the Windows Anytime Upgrade, and is explained at this site: http://bit.ly/VrV58.

Do you know if the new Windows 7 Home Premium will be offered at less than the retail price of $120 to current Vista PC owners who wish to upgrade?

A: That $120 price is the upgrade price for Vista owners moving to Windows 7 Home Premium, though of course some retailers might discount it. The “full,” or non-upgrade, edition of Home Premium lists for $200. Microsoft did run a sale on Windows 7 pre-orders earlier this year, but that’s over.

You can also get a Windows 7 upgrade from participating PC makers free, or for a nominal fee, if you buy a new PC equipped with Vista before the end of January, 2010, or bought one after June 26, 2009. For the latter offer, consult: http://bit.ly/rjAz4.

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

Corrections & Amplifications

An earlier version of this column erroneously stated that Windows 7 had to be purchased on a disk.

I haven’t tested campusbackup.org, whose Student Backup service copies an unlimited quantity of word-processing, spreadsheet, presentation and PDF files, once nightly, to a remote server for $50 a year. But there are other, more versatile options I have tested that, unlike Student Backup, copy photos and music and other types of files. These include MozyHome ($4.95 a month for unlimited storage, at mozy.com) and Carbonite ($55 a year for unlimited storage at carbonite.com). All three work with either Windows or Mac computers.

I read that importing the newly remastered Beatles CDs into iTunes and listening to them on a computer or portable player is like buying a masterpiece and staring at a photocopy of it. Any truth to this? Does importing really lose that much quality?

It depends on how sensitive an ear you have. In most cases, when you import a CD into iTunes or any other software jukebox program, you are converting the songs into a compressed file, such as an MP3 or AAC file. This saves a ton of space on your hard disk, but at least subtly diminishes quality. To an audiophile, that can make a big, negative difference, especially when you add the insult of listening to the music through iPod headphones or small computer speakers. To most of the rest of us, though—especially with rock, pop, urban or country music—it’s no big deal.

However, there is a compromise. If you don’t care about the songs taking up lots more space on your hard disk, iTunes will allow you to import them in a much less compressed format called Apple Lossless or an uncompressed format called WAV. You can choose which format to use in the iTunes Preferences settings. In the latest version of iTunes, called iTunes 9, this particular option is found under the General tab in Preferences, by clicking on the button called “Import Settings.”

Previously I had a Dell and Windows and used Family Tree Maker for genealogy records. Now that I’m an Apple owner, I find that Family Tree Maker does not work on an Apple, only Windows. What can I do about this?

It seems to me that you have three obvious options. If you still have your old Dell, you could crank it up again just for the purpose of running Family Tree Maker. Or, you could buy a boxed copy of Windows and install it on your Mac, which is fully capable of running Windows and Windows programs (assuming it’s an Intel-based Mac). Finally, you could switch to one of the native Mac-based genealogy programs and import your data from Family Tree Maker via the standard GEDCOM file format used in genealogy. One such program, called Reunion, includes specific instructions on importing data from Family Tree Maker on its “Top 10 Questions” page, at leisterpro.com.

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.

Such a user would be able to upgrade to, and run, both new operating systems on the same Mac. Microsoft says Windows 7 will be licensed to work within a virtual machine on a Mac—a faux Windows computer—just like XP and Vista can. Apple also plans to offer Windows 7 drivers for its hardware after the new Microsoft system comes out on Oct. 22, so that users who wish to use its Boot Camp system for running Windows on a Mac can use the new Windows.

You can choose to keep running older versions of Windows on Macs equipped with Snow Leopard, or, presumably, run Windows 7 on Macs that still run Leopard. But note that if you do upgrade a copy of Windows to Windows 7 running on a Mac—even if it’s in a virtual machine—you must follow the same, sometimes painful, process that faces owners of standard Windows computers.

I am color blind and am wondering if the DriveSharp driving improvement software you reviewed last week involves identifying colors as part of the learning process.

Yes, it does. Both of the program’s training exercises, which hone users’ abilities to track multiple moving objects and to expand their fields of vision, do rely to some extent on distinguishing colors.

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

To avoid the difficulties you described last week with migrating from Windows XP to Windows 7, what do you think about a two-step approach whereby we buy Vista, upgrade from XP to Vista, and then go from Vista to Windows 7?

That would work, since–unlike those running XP–PCs running Vista can be upgraded to Windows 7 directly, without wiping their hard drives, displacing any files or re-installing any programs.

However, you’d be doing twice the work and paying for two new versions of Windows instead of one.

If I bought a Vista computer, but had it downgraded at the factory to XP, will my situation be any different than what you described should I choose to migrate to Windows 7?

According to Microsoft, the answer is no. Your computer is now a Windows XP computer, and thus still has no direct upgrade path to Windows 7. You would still have to remove and later restore your personal files, wipe your hard disk clean, and then re-install all your programs. However, if you received Windows Vista installation disks with the machine, you could upgrade it to Windows Vista first, and then, upgrade it directly to Windows 7, a process that doesn’t require any of those cumbersome steps.

Does the difficult scenario of moving from Windows XP to Windows 7 that you described last week also apply to those of us who run XP on Macs in virtual-machine programs like Parallels or Fusion?

Yes. Microsoft says the same migration steps are necessary whether the Windows XP computer is physical or virtual, and that includes Macs running XP via the Parallels or Fusion software.

It also applies if you are running XP on a Mac using Apple’s Boot Camp program and wish to move to Windows 7.

After Windows 7 comes out in October, will Microsoft somehow force us XP users to stop using it? Is there any reason I have to upgrade, or can I keep using XP, which meets my needs perfectly?

You can keep using Windows XP and all your current programs on your current computer. It won’t suddenly expire.

Especially in light of how hard it will be to upgrade, can you please explain what advantages Windows 7 will have over XP, which is tried and true? I deliberately skipped Vista and am inclined to skip this new Windows version as well.

People should never feel stampeded to upgrade their technology and should keep using whatever meets their needs and makes them comfortable.

However, based on my testing of pre-release versions of Windows 7, I would say it is significantly better than XP, which, after all, was designed a decade ago, an eternity in computer time.

I’ll cite just a few examples. Microsoft says that Windows 7 is more secure than XP, because its underlying architecture allows more defenses against malicious software than in the older product. Microsoft claims, and my tests bear out, that Windows 7 makes networking computers much simpler, quicker and more reliable than XP does. And the company says that Wi-Fi networks work better and faster than they do with XP.

I would add that, if Windows 7 catches on in a way that Vista didn’t, you may gradually find that new software and hardware makers will stop bothering to make their products compatible with XP, though this process will take years.

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

Recently, you reviewed some new Apple laptops whose batteries are sealed in and can’t be removed by the user. But I have had situations with some laptops where the only way to restart them when frozen is to remove the battery. How can this problem be handled if the battery is sealed in?

On Mac laptops, you can shut down the computer, even if the software appears frozen, by holding down the power button firmly and continuously for 5-10 seconds. You then wait a few seconds, press the power button again, and the machine should start up. This is different from the more common scenario where a brief press of the power button brings up a dialog box allowing you to choose to shut down or restart the Mac, or to put it into sleep mode.

Apple says there is another method you can use instead of removing a battery. Pressing the Control and Command keys simultaneously with the Power Button restarts the computer.

I live in the U.S. and when I visit Europe I have no cellphone, which makes it difficult to stay in touch during my trips. I am completely ignorant about cellphones and use a pay-as-you-go model that doesn’t work in Europe. What type of phone do you recommend I buy that I can use both in the States and abroad? I do not need a built-in camera, or any other fancy add-ons. I only want to be able to call people.

The two major U.S. phone carriers whose underlying technology is compatible with the system used in Europe are AT&T and T-Mobile. Given your needs and your usage pattern, I’d go into one of their stores and look for the least expensive and simplest model that can operate on all the frequencies used in the U.S. and Europe. These phones are typically referred to as “quad band” or sometimes as “world phones.” I would also try and find a plan that minimizes overseas roaming charges, which can be quite high.

Another option is to look for an “unlocked” phone that can accept different SIM cards, the small chips that connect phones to carriers. That way, you could have one SIM for use in the U.S. and another for whatever country you are visiting.

I have hundreds of folders in “My documents.” In each folder there may be hundreds more individual files. Is there a way to rapidly search for key words in all of those documents in order to locate any files that might contain a particular word?

If you are using Windows XP, you can download and install various desktop search add-on products that can solve your problem. The best known are Windows search, from Microsoft, at http://bit.ly/Dflai, and Google Desktop Search, at desktop.google.com. If you have Windows Vista, it comes with a built-in desktop search function that can accomplish that task, though you can also use the Google product.

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

I live in Puerto Vallarta, Mexico, for six winter months. I would love to have a Kindle. Can I download additional books in Mexico or must I download all I think I’ll want to read before I go?

Yes, you can, but it’s a bit of a convoluted process. Amazon says that, if you are a U.S. customer temporarily outside the U.S., where the Kindle’s wireless downloading capability won’t work, you can “sideload” books over the Kindle’s USB cable — normally used for transferring audiobooks or photos — from your PC or Mac.

According to Amazon, here’s how you do this. First, order a Kindle book on the Amazon Web site from your computer and tell it to send it wirelessly to your Kindle. This will fail. But you can then go to the “Manage Your Kindle” page on the Amazon site, which lists all the Kindle books you’ve bought under the heading “Your Orders.” Select the one you want, and click on the drop-down list at the far right labeled “Download/Send to…”. Select “computer” as your destination, and the book will be downloaded to your PC or Mac as a file with the suffix “azw.” From there, you can manually drag this file into your Kindle using the USB cable.

My husband wants to buy a laptop, but I said not to get one with Vista and to wait for Windows 7. Am I right?

I agree that, if he can do so, he should wait for Windows 7. While it isn’t officially released, my experience with its pre-release version has convinced me that Windows 7 is much faster, less annoying, and more compatible with third-party hardware than Vista is. You can read my first impressions of Windows 7 at: http://bit.ly/r9xEP.

• 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.

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 am a longtime Palm user and am wondering if the new Palm Pre smart phone can run all the Palm OS programs I have become used to on my Treo.

The Pre is a clean break with Palm’s former operating system and previous hardware, and was designed as a platform for a new generation of software programs, or apps. It uses a new operating system called webOS, which wasn’t built to run old Palm OS programs.

However, there is a $30 program called “Classic” by a company called MotionApps (motionapps.com) that emulates the old platform and makes your sleek new Pre look and work like an old Palm device. It is intended to allow older programs to run on the Pre inside this virtual environment created by Classic. I haven’t tested it with older third-party programs and so I can’t say how well they work in this emulation mode.

But there are some caveats to this method. First, not all old Palm programs will run inside the Classic environment, or at least run well. The company lists those certified to work well on its Web site. Second, the old apps can’t activate certain features of the Pre, such as the camera. Third, Classic’s maker says it hasn’t yet figured out how to sync the old apps with a computer using Palm’s old, familiar HotSync process.

Can the Palm Pre be used as a modem for my laptop?

Sprint, the carrier that is launching the Pre, says the answer to this question is no. The company says its data plans for the Pre don’t permit that scenario.

I use Time Machine for my Mac, but I would also like the belt & suspenders security of manually backing up my invaluable iCal data on an external hard drive. How would I do that?

It’s easy. Just go into iCal’s File menu, select “Back up iCal…” and you can save a copy of your calendar to any drive connected to your computer, or even to any computer or external drive on a network, or over the Internet, that your Mac can access. To restore your calendar, just go to the same menu, but this time select “Restore iCal…” and then select your backup file.

• 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.

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.