OK, since the other one was locked...
I have pretty much the same problem (start up, ping, into white, then back to windows), but i looked in the 3D set up, and it gave me the option in 3D harware thing to get RGB emulation.
I highlighted and selected it. I then went back to set up to check if it was all working. It didnt have RGB highlighted, just nothing.
I can only assume that its doing something as soon as i exit...
Oh, and im also having this problem with Bikez2, but Notrium and Wazzal run fine.
Im just about to download Megabane.
Great site Ville!
EDIT: By the way, I have a NVIDIA Geforce2 MX/MX 400, and Windows 98.