This is an Nvidia reference driver that can be downloaded from nvidia.com if you would rather get it there,but do follow the instructions below which you wont get from nVidia.
Do not uninstall anything!
In display settings,advanced,click change, change to standard vga adapter,this will null the present TNT drivers, reboot.
Go to control panel,add/remove software and install, Winx9/ME_23.11.exe,system will reboot and you are done.
Hope these work as well for you as they have for me...1200x1600 display,highest resolution,and all the smoke,clouds,shadows etc. and no problems.