What is a good Free Anti virus protection to use?

I would like to find a fantastic free anti virus protection Im using the new Ad Adware 2007 but dont know whether Im keen on it the old one was heaps better Also would Avira Antivir be good %26 which one if that is the case pls help

What is a good Free Anti virus protection to use?bmw

I use the free = Avast = 4 Home Edition - Free antivirus software - free virus protection for home PC: - full-featured antivirus package designed for home usage.(FREE) = http://www.avast.com , and really like it as it has always kept me safe from virus, worms, trojans, etc. avast! Home - Vista-compatible, both the free and paid versions.

http://www.avast.com/

I am running WinXP, SP2, 512MB RAM,

Here is a list of some FREE Security/protection programs, ALL OF WHICH I USE, with the DOWNLOAD links included. They are all free. The only thing I have paid for is the hardware router. Note: [blue]'' Anti-spyware programs complement each other. Thats because spyware definitions vary between anti-spyware programs. If you use multiple programs, you have a better chance of catching spyware.'' [/blue]: From = Kim Newsletter; 19Jan08 - %26gt;%26gt; http://www.komando.com/kimsclub/account-...

HOUSECALL from TRENDMICRO - FREE online Virus scan and repair = (Check the autoclean box) = ( IT IS OK TO HAVE MORE THAN ONE ANT-SPYWARE/MALWARE PROGRAM ENABLED AND RUNNIBG AT THE SAME TIME) = Download Here %26gt;%26gt;%26gt;%26gt; http://housecall.trendmicro.com