PC Tools, makers of the popular anti-spyware software, Spyware Doctor, have released a freeware version of PC Tools Antivirus, a freeware virus/torjan/worm protection software for Windows 2000, XP and Vista.

Here are some of the features of the freeware version of PC Tools Antivirus:

-Real time Virus, worm, Trojan protection
-OnGuard Protection- Real time File Guard, Email Guard and Internet Guard scanning
-Frequent updates against the latest threats
-Detects, quarantines, disinfects and removes Viruses, Trojans and Worms

Download here