hey, why don't you give it a try, i also own a geforce256 and the new 12.+ drivers did great on me specially with framebuffer effects with pete's gpu. and from experience they have been very stable.
also from what i have heard the 12.+ drivers are almost near completion(to be used as geforce3 drivers) meaning they are close to official.
also from what i have heard the 12.+ drivers are almost near completion(to be used as geforce3 drivers) meaning they are close to official.