Virus remover programs(free)

I need to download a good free virus protector program right now
My computer says it has viruses and the one I'am using wants me to buy a full term program for 200 bucks...i need help

Avg .

Its not free...its 19.99 and i don't see a trial button

AVG or AVAST (for sake of protecting my ass from being banned or getting warned i dont provide any links for warez ones, but you can google for those two)

AVG/Avira/Avast.
Avira's free version is nice.

I went with Avg...it was free i wasn't looking right...Thank you guys

Pirate Bitdefender 2010. It's the best IMO.

AVG, Malwarebytes and Avira.

Avira all the way ;)