Is the screen blank just at the beginning of the start of your X-session?
'cause I had problems under SuSE 8.2 when shutting down X or changing to console (Textmode) => PC freezes. But X itself works fine with nvidia-driver 4363.
My configuration is:
GeForce4 Ti4200 AGP8x
Now I'm working with the nvidia 4149-driver.
Loading an older Mainboard BIOS (<= 3129) seems not to work in my case.
I'm still searching for a solution to fix this problem. Seems, that I have to reverse engineer some sources
Hoping, hoping, searching...