Earlier this week NVIDIA released the GeForce 190.38 WHQL drivers for Windows XP, Vista and 7. You can download them over here. These drivers add support for OpenGL 3.1, CUDA 2.3 and a new power management scheme.
Changelog of Windows 7 and Vista driver:
Adds support for OpenGL 3.1
Adds support for CUDA 2.3 for improved performance in GPU Computing applications. See CUDA Zone for more details.
Adds a new user-controlled power management setting for select GeForce 9-series and later graphics cards (cards must already support more than one power state). This option allows users to set a performance level for each DirectX or OpenGL application.
Includes several new control panel features and numerous bug fixes. More information can be found in the release documentation.