What kind of free anti virus do you know in the internet for windows xp or vista? which is the best? why?

Question

What kind of free anti virus do you know in the internet for windows xp or vista? which is the best? why?

Answer 1

if you download a anti virus program from the internet you'll get a virus it happened to me before.! just go buy one at walmart or something

Answer 2

Don't download anything, if you do and scan your pc it will detect the viruses but it won't remove them, it will ask you to buy the full version so don't waste your time downloading any, try buying one instead I have Defender Pro 5 in 1 its available at wal-mart for about 20 dollars it works on xp and vista.