Arrighty. I used windows ME, nothing different on the machine at all. SO! I install XP, go to change my resolution to 1024x960x32 (what I used on ME) and I can't. It goes to 640x480x16. Video drivers are installed correctly, as well as my monitor.
I had this problem with my sisters problem. The problem was that the video card drivers weren't installed properly. Check in device manager.
I had this problem last month, just installed some FX5500 i had lying in my room. Problem was integrated graphics just pooped, I had 960kb of VRAM.