well, is it showing up with a duplicated image? cuz if so just go into ur graphics properties in windows, for xp right click desktop and click properties and go to the tap for the monitors/resolution, in vista go to personalize and i think displace settings, and windows 7 right click desktop and select screen resolution. once there u should be able to do something in order to chose to duplicate the image or not, im not sure but i think u jsut put a check in a box and click apply, but im in windows 7, and its a bit different here, and i don't have a second monitor, so i cant say for sure