I hope someone could help me on this problem. i have searched in this forum that everyone who changes the resolution, does not produce any problem. While for me, i am using vista service pack 2, running ufo alien invasion 2.2.1. when i want to change to full screen mode and/or change the resolution to 800x600, the whole game shuts down automatically. even when i try to change to other resolutions, the same problem occurs. i also tried to use the console to change the resolutions, same thing, problem comes up. anyone has any idea how to solve this problem?