Than: I gotta guess that if the CD has a virus on it then it isn't direct from the manufacturer.... If it isn't direct from the manufacturer then it is what is called a pirate copy.... Pirate copies are illegal since you are in breach of copyright.

Thus, since what you appear to be doing is illegal, you haven't spent any money on the game and the risk to your computer is high I would throw the thing in the trash and write it off to experience.......