I am providing my problem in detail here and hope someone can guide me properly. I am using a Compaq 15" monitor. When I try to increase the resolution it fails. I am having a Compaq laptop. I am trying to configure dual monitor setup. Now I need a shared resolution of 1280x800 on both the screen. But somehow I am able to get a standard resolution only. Even though I am using the right video drivers. Later on I upgraded to Vista and nothing is working now. The specification of my system said that Vista will work on it, but somehow it is giving a poor display output.