MVKTech has just released a new version of NVIDIA BIOS Editor (NiBiTor) software. NiBiTor is the original and defenitive BIOS tweaker that supports the latest NVIDIA graphics cards. NiBiTor allows graphics card enthusiasts to have full control over advanced features and functionality found on firmware on supporting cards. This to gain some extra performance, enable hidden features and extra stability on the NVIDIA graphics cards.
Changes in this version:
Added support for GeForce 7800 GS AGP
Added support for GeForce Go 7800
Added support for Quadro FX 1400 PCI-E
Added Windows 64-bit support
Some small bugfixes
You can get it over here