Nvidia has released a new version of ForceWare for XP, Vista, and 7. Get them at their site.
Version: 190.62 WHQL
New in Release 190.6 2

Adds WHQL support on Windows 7 for Microsoft’s new DirectX GPU Computing API: DirectCompute.
Optimized for the latest PhysX gaming titles: Batman: Arkham Asylum and Darkest of Days.
Installs PhysX System Software version 9.09.0814.