PaddyRamsey

I'd be very grateful if someone could help me out here. I have a GeForce 7800 GT and when the game loads up, it gets to the title screen (the pic with the 3 guys), but for some reason the screen doesn't display the main menu. I know it's actually there because I can still hear the mouse rolling over where the buttons are, but no matter what I click it won't register a screen change. Can anyone help?