I just upgraded to WinXP and can no longer get my monitor set to 2048 x 1536 - which was my resolution in Win2K prevoiously. The most I can do now is 1920 x 1440 - and that is only 16 bit color. I have a 21" Sony Trinitron G500 monitor and an Nvidia Riva TNT2 (pro?) vid card. I have the newest driver installed. I've also made sure that my display settings recognize my monitor and that the right one is selected. performance has been a little slow since the upgrade, but it's only a 700 MHz Athlon in there. I did find performance to increase significantly when I dropped hardware acceleration a notch (under: Display properties - settings - advanced - troubleshoot) Anyone have any ideas? It seems that XP should be getting all the drivers right, but I don't know what else could be going on. Could XP require more VRAM to do the same job? Many thanks for any help.