Did you just upgrade your monitor or video card? If so, perhaps you neglected to properly remove existing drivers before proceeding with installation of the new hardware?
Try your monitor and video card drivers, setting both to default, and then set the specific AV-195TF and Voodoo3 2000 drivers.
Let us know how it goes.
Edit: People seem to know about this, so listen to them - Upgrade the monitor driver.
-RSI