All config that I speek is for DirectX, because with OpenGL the framebuffer was not implement
Can you post screenshot to show the problem ^_^.
I have test another idea

.
That's seems to work. I have only test with the last forceware.
Install last forceware, and in rice plugin's, use the default config except ...
use directx
force "limited 2 combiner".
If you use pj64, use the advanced setting and set the "use direct3d pipeline". I don't know why, but If I don't enable this some polygon and texture does not appear ????
I don't know why the TNT/Geforce combiner not work after 45.23 .
May be a new "optimisation" in the forceware driver or a new combiner system ??? NVidia is not very "eloquant" to this modification.