I personally would go with nod32, I've heard that AVG has a habit of picking up cracks as trojans. Also I had AVG anti-virus a couple of years ago and it missed a virus which nuked my computer so since then I don't trust them at all. If you're worried I'd suggest maybe downloading some other anti-spyware programs and running it through them or just not installing the cracked program at all.
btw I'm not an IT professional and there are some really knowledgeable members on this board that can probably offer better advice then me
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