My friends computer is ****ed up from too much porn and trojan virus even though he tries to hide it. And what does he do, call his asian friend to fix it.

I installed a hacked 2007 norton but it doesn't work, i think norton discovered and fixed the hack through live updates.

Alright I need a free antivirus program, I remenber there was a really good one that was absolutely free but google gives me nothing but free trial crap.

any help would be greatly appreciated.