Guru3d have released a new version of thier tweak tool called nVHardPage. Quotes from Guru:

Do you seek an easy way to en/disable overclocking options or vsync option in your detonator drivers without the burden of importing registry entries or the need to go in that registry yourself ? Basically CoolBits and more within your fingertips.

This program serves on enabling/disabling hidden features in nVidia control panel and tweaking nVidia Direct3D & OpenGL settings.

Supported OS: WinXP, Win2k, Win9x/Me - only CoolBits & Display orientation at the moment.

Supported Drivers: Detonators 21.81 and higher.

What's New

added higher-order primitives support emulation
added alpha fs f/d option
added option for easy change of screen resolution
fixed D3D Antialiasing settings and detection
fixed OpenGL Antialiasing settings and detection
added support for 2 nV cards in system
updated preset manager
updated OpenGL anisotropic filtering option
some others small fixes and changes
news in adapter info program:
added object LOD support
updated caps info

Download nVHardPage v0.97.7b