Free antivirus?

I want to download a trustable and free antivirus, do you know one?

Free antivirus?antivirus

AntiVir Personal 7.0 (6.35.01.103)

H+BEDV - 10.32MB (Freeware)

Freeware program and has found stuff that Norton Anti-virus hasn't found.

Free antivirus?computer

AVG free edition
macfee but u have to have comcast but theres a kool site www.siteadviser.com it bacly saved my life
there are some good ones at download.com i think
AVG Anti-Virus Free, get it at www.betanews.com
Free Anti-virus:

http://free.grisoft.com/doc/1

http://www.avast.com/eng/avast_4_home.ht...

http://www.trendmicro.com/hc_intro/defau...
AntiVir PersonalEdition is very good

http://www.free-av.com/
AVG antivirus Free.grisoft.com