Best Free Virus Scanner: PC Pitstop

Is your PC infected? You might not know until it's too late, unless you make a detour to PC Pitstop. Here you can download an applet that scans your PC and ferrets out any nasties it finds. You can run a quick check or tell the site to scan your entire system. And it's fast--the quick check scanned more than 4000 files on my PC in less than a minute. The downside: You must visit the site to run a check. While PC Pitstop doesn't provide the 24/7 protection you'd get from a true antivirus program, it's an easy way to restore your piece of mind.