Help File

QYears ago, I bought an "HD-ready" television that did not include a digital-TV tuner. Now I would like to get the over-the-air high-def channels. Can I add that capability to my set?

AThe obvious, but wrong, remedy would be a cheap digital-TV converter box. That will only yield a standard-definition picture.

The second-most-obvious option would be to plug in a DVD recorder with a digital tuner. Unfortunately, current models convert high-def broadcasts to standard definition to allow them to be recorded to disc. When plugged into a high-definition TV, they will "upconvert" that standard-def feed back to HD resolution, but you'll lose details in the process -- and on a big screen, you'll probably notice the difference.

Instead, look for a standalone HDTV tuner. These can be hard to find in stores but should be easy to pick up online. For example, the Amazon and Best Buy Web sites list a $180 Samsung model.

You also could spend a little more for a tuner-equipped digital video recorder, such as TiVo's TiVo HD ($300 plus service fees of $12.95 a month or less, depending on how much you prepay) or Dish Network's new DTVPal Plus DVR ($250, no service fee).

How can I get my BlackBerry to lock its keyboard automatically when I'm not using it?

Try a free program called AutoLock. Visit http://geekandproud.net/blackberry-software on your BlackBerry and select the first "OTA Install" link to set up this program. You also may be asked to grant AutoLock access to your phone after installing it or the first time it runs.

On a BlackBerry Bold and Storm, this program worked as advertised, securing the Bold's keyboard and the Storm's screen and buttons after about 30 seconds of inactivity.

Rob Pegoraro attempts to untangle computing conundrums and errant electronics each week. Send questions to The Washington Post, 1150 15th St. NW, Washington, D.C. 20071 or robp@washpost.com. Turn to Thursday's Business section or visit washingtonpost.com anytime for his Fast Forward column.