I've downloaded the game from Steam, and after hours of messing with it and searching i finally got it to activate but when i launch the game there's a flashing box in the corner with the serial in it. i have to press shift and tab to get rid of it but it makes the whole screen flash erratically and the game looks like its about to crash ;( it happens every time i load the game and it's very annoying!!! is there anything i can do to get rid of this???? any help would be much appreciated... thanks guys