I have a CRT monitor and its color is changed to red. I donno wats the problem is n I'm unable to rectify the problem. Please help me out in solving that problem.

Hi,
I have a Viewsonic Optiquest Q22wb monitor that I share between 2 desktops. PC 1 has XP and PC 2 has Vista. With the XP the monitor is fine. With Vista the background is pink. I uptated the NVidia driver and the monitor shows as pnp generic. I tried tweaking the color settings. Did not help. Maybe I am overlooking some settings. Need help. Thanks