The long awaited nForce2 driver pack 2.45 has just been released. You can grab it from nVidia's downloads page (just go to www.nvidia.com). It has a few useful fixes;

WHQL certified kit for nForce and nForce2 (NOTE: the graphics drivers in the English only kit is not WHQL certified. However, it is the same driver version as the international kit)
Includes support for nForce2 400 and nForce2 Ultra 400
EAX fixes and compatibility improvements in
Operation Flashpoint
Neverwinter Nights
The Matrix Reloaded
Grand Theft Auto: ViceCity
Mafia
Battlefield 1942
Updated audio control panel
3D audio performance improvements
NOTE: NVIDIA accelerated IDE drivers are not included in this release.

Enjoy.

Oh and apparently there will be a new enhanced IDE driver out for nForce2 in about a week (thanks go to www.nforcershq.com for the info on that).