Avira AntiVir Personal - FREE Antivirus
Avira AntiVir Personal - FREE Antivirus is a free antivirus solution, that scans your computer for malicious programs (such as viruses, Trojans, backdoor programs, worms, dialers etc.), monitoring every action executed by the user or by the operating system and being able to react promptly when a malicious program is detected.
This version is compatible with computers running Windows 2000, XP, and Vista.