Well - I didnt know if you were launching a single player game, or launching Multi-player through gamespy. MP gives the grey screen of hell if a SERVER is poopoo - but it sounds more technical on your side. The only thing I can ask if this is a legitimate copy of the gmae (saying yes when you mean no wont help you out - ), and if it is - do you have the latest "working" drivers for your card.

It really sounds like you just need to reinstall the bloody thing to get it working all kosher.

EXCELSIOR!!!!