Graphics OpenGL with A64 laptop- need help!

I have recently put Windows x64 on my Acer 1522 WLMi laptop and of course the recent nvidia drivers do not support mobile chipsets. So I have installed drivers with modded infs from http://www.laptopvideo2go.com. It all works apart from the OpenGL. Whenever I try to play Jedi Academy it says 'cannot load opengl subsystem.' That was with the latest 77.77 drivers and it does the same thing with the earlier 71.84.

I have a GeForce FX Go5700 64MB gpu in the laptop. I have posted in the LV2G forum but no one has responded there and I thought I might get more luck by posting here

Cheers