[img]tongue.gif[/img] Take that CD, put it in a case and give it to someone else you know so that someone else can enjoy it while you're trying to go cold turkey.
If that doesn't work, get metal box (ie: locker), lock it with a new lock and then rip the combination from the back of that lock so that you don't know the combination. You want to play the game? You gotta decode it first.
Find something else to do that interests you. Chess, watch the Olympics right now, Bike, go watch a movie, go see some friends, etc.
Don't use the computer at all if you can help it. Using it will just remind yourself of WC3, making it that much harder for you to quit.
If all else fails, break the CD. Or, for the ultimate cure, read my long rant about how I think WC3 is a piece of crap. Then, you'll be too busy trying to argue with me to actually play the game.