when i start it its ok, but when it comes to the game screen( when it says press enter) and windows live appear and i cant sign in because i misplaced my cd with its product key...... so when i click dont sign in, it simply crashes right away..... can someone please help me!!!! is this caused by windows live or the game itself?... please help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!