Lincoln Spector, Melissa J. 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.

Are Android tablets poised to fall in price, again? That’s what it sounds like based on comments by Nvidia vice president Rob Csonger. In a call with investors, Csonger discussed the existence of a reference design for a $199 Android tablet running the company’s Tegra 3 processor. What’s noteworthy here is that, in the five months since Nvidia took the stage at its CES 2012 press conference, the company has lowered the target price of its inexpensive tablet platform from $249 to $199.

That 20 percent price decrease reflects the ongoing price pressures in the non-Apple tablet market, where the Amazon Kindle Fire dominates among 7-inch models, and Samsung’s Galaxy Tab 2 7.0 dropped in price by 38 percent compared with last fall’s model. However, neither of those models are performance barn burners, and neither features a quad-core processor with the potential power of Nvidia’s Tegra 3 platform.

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.

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.

Huawei's MediaPad 10 tabletHuawei brought its MediaPad 10 tablet to CTIA 2012. The tablet was first introduced at Mobile World Congress in February, as was the Ascend line of smartphones.

Neither has changed much since then, and both remain in limbo in terms of U.S. availability, but we did catch a few new changes in the tablet's software and hardware.

AT&T is making an ambitious jump into home security and automation with AT&T Digital Life, a service that will run on its wireless infrastructure. The company announced the venture here at the CTIA trade show at an offsite event in the New Orleans' Garden District. Trials of the new offering begin this summer in Atlanta and Dallas.

Home automation is a departure from AT&T's core products and services, but the Digital Life service, says Ainsley M. Sadio, assistant vice president for AT&T Digital Life, is a complement to the company's existing service offerings.

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.

CTIA 2012 in New Orleans starts May 8.CTIA 2012 kicks off next week in the Big Easy, and PCWorld will be at the show to bring you all the latest mobile news from New Orleans.

Unlike Mobile World Congress (MWC) or even the Consumer Electronics Show (CES), CTIA is more of a U.S.-focused gathering for the wireless industry. Here's what we know so far.