In all background pictures, including the one in the main menu, or the wedding image, for example, have two perpendicular lines.
One that devides the screen in two parts (left and right), and another near and paralel to the bottom. So it looks like an inverted cross, to the full width and hight of the screen.
I'm running the game in Vista 64bits @ 1680x1050 resolution, with a GTX285 graphics card. Latest drivers.