Lincoln Spector, Melissa Perenson

Billiebong wants to remove a program that lacks an uninstaller, and turned to the

Before you try to manually remove a program, make sure there's no uninstaller. Check the Start menu. If the Start menu contains a submenu for the unwanted program, there's likely a link to the uninstaller there.

You should also check Windows' own list of uninstallers. Select Start (Start>Run in XP), type appwiz.cpl, and press ENTER. You'll find all the uninstallers that Windows knows about in alphabetical order.

SIUC asked the Windows forum about running software intended for Windows XP in Windows 7.

For the most part, it should just work. I've rarely run into programs that run fine in XP but have trouble in Windows 7.

Spiderowych asked the Answer Line Forum to recommend medical information Web sites.

Maintaining a healthy mind and body takes considerably more effort than maintaining a healthy computer--and it's a lot more important. Although nothing on the Internet can replace regular checkups with a medical professional, the right Web sites can help you find quick answers to your medical questions, walk through symptoms to figure out what you have, provide tips for a healthy lifestyle, and find out more about your prescription medications.

The calendar on Jstanaway's Android phone displays appointments that he never made--hundreds of them from someone else's calendar. He can't delete them. He asked the Answer Line forum for advice.

Android's built-in calendar app can display the contents of more than one Google calendar, integrating them together. These can include both calendars that you create yourself (for instance, separate work and off-hour calendars), as well as ones created by other people that you can read but not alter. For instance, in addition to my own calendar, I display calendars for US and Jewish holidays.

Westpark asked the Windows forum if it's advisable to turn off Windows' automatic updates.

There are good arguments both ways. Personally, I keep it on, and I think that for most people, that's the best solution. But before I give my argument, I'll explain why other people disagree.

The Samsung Galaxy Tab 2 is now shipping, and PCWorld is running it through our gauntlet of tests to see how it compares with its predecessor. Our full review is forthcoming, but in the meantime, here's a quick look at the Tab 2's performance as compared with the original, nearly year-old Galaxy Tab 10.1.

In short, last year's tablet actually outperformed the new model on some of our tests. Some metrics, such as our Sunspider tests, were effectively identical. Others showed a distinct trend toward sluggish performance by Tab 2 10.1. For example, the Tab 2's cold start-up time was 22 percent longer than the original Tab, 44 seconds to the original's 36 seconds. And its results on our GLBenchmark were mixed -- the Tab 2 slightly outpaced the the original Tab on the Egypt Offscreen and Pro Offscreen tests, but it lagged slightly on Egypt Standard and Egypt Pro Standard.

On paper, or on a website, the Samsung UN46D6000 looks like an all-around excellent HDTV, especially for a street price of around $1000 (as of 5/5/2012). While the UN46D6000 refreshes the screen at a rate of 120Hz, Samsung claims that the HDTV's “Clear Motion Rate” technology simulates the smoother motion you might see on a 240Hz set (more on that later). The set's sleek, easy-to-navigate Smart Hub feature provides access to your home network and the Internet. You can even control the set from your iPhone or Android device.

But you can't judge a television by its cover--or its stats. You can judge one by looking at the image quality, and here the UN46D6000 disappointed--especially in tests involving complex motion.

Crazy4laptops needs to extend a WiFi network throughout a "rather long house." He asked the Networking forum for advice.

There are plenty of ways to extend a connection. Some are easier than others.

Jeff Hudgins removed the hard drive from a dying computer, and via USB plugged it into a new PC. But he can't access his files. They're encrypted.

I don't like Windows' Encrypted File System (EFS), and Jeff's story illustrates why. Although EFS provides what appears to be a convenient, completely transparent form of encryption, it can be trouble down the road.

I lot of headlines this week proclaimed that Intel's new Ivy Bridge processors actually run a lot hotter than the Sandy Bridge processors they're set to replace. The truth is not that simple. We'll break it down for you in the podcast.

We also discuss the merits of Nvidia's new GeForce GTX 690 graphics card, which is essentially two GeForce GTX 680 cards for the price of...well...two.

Nick Golna asked whether he should backup his photos onto a flash drive or DVDs. I discuss other options, as well.

With one exception, I don't recommend flash drives for backup. On a dollar-per-gigabyte basis, they're relatively expensive.

Tom Lorch isn't sure if Windows sees him as the administrator, or exactly what that means.

Every Windows installation has one or more user accounts--you have to log onto one when you boot your PC. At least one of those accounts must have administrator privileges. Only an administrator can install software, change some of the more dangerous settings, and remove other users' logon passwords.