not if you are running a lcd. Otherwise like he said increase your crt's resolution. 800x600 will always be the same size on an lcd. For instance if you have a lcd with 1600 pixels high by 1200 pixels wide. and you have an 800x 600 window it will always be 1/2 of the screen. it will always be 800 by 600. If you wanted a smaller window you can; A. increase your overall resolution, or B. lower the windows resolution.