I have a problem with my monitor. Every 30-45 minutes I get a blank DOS screen with nothing more than a blinking _, and then it makes an EXTREMELY WEIRD distortion of the stuff I have on my screen; then it turns back to normal. Most of the programs I have installed are not affected by this DOS screen, but after the distortion I discover that any Wonderland window running has been turned completely black, Wicky Woo and Stellarium open up an error report message, and Sims 2 is SO FRAGILE that my computer doesn't respond anymore, and I have to turn it off using the power button

I probably have to get a new graphics card. I was recommended to buy *dramatic pause* a GeForce 256 Meg.
I read older topics on this forum and heard that some people had SERIOUS problems with the game(s), and most of them were using GeForce.
So my question is: Does anyone know how Wonderland will be affected when I'll use GeForce?
Thanks.
P.S. I have Wonderland Demo v1.16, WSW full 1.00, RTW Platinum 3.01, and WA 1.00.