No one likes getting a virus. Generally, there are no cures for them, and they stick around for a long time. For the most part, bodies can eventually fight them off; computers can't.

Computer viruses are nasty things that your computer can pick up from sources such as the Internet or an incoming e-mail attachment. They can range from mild to serious, but aside from following common sense (like never opening an attachment sent from someone you don't know), there's only one thing you can do to prevent them: use anti-virus software.

Because there are always new viruses forming, it's important to fortify your computer with the most up-to-date version of whichever software you choose.

There are a few places to look for good software. Some programs are free and you can download them; others come in the form of a CD-ROM and can be bought.

Here are two of the best:

http://www/symantec.com/sabu/qdeck/ncs
http://www.mcafee.com/

My favorite: Dr. Solomon's Anti-Virus. The latest version for PCs is VirusScan 4; for Macs, it's Virex.

http://www.drsolomon.com

For more on using anti-virus software, take part in the lively conversation on the Message Board.