Nice copy/paste guys... It seems you are all well following the thread on MVKTech but don't really discuss it there but rather here. To make it clear to every one, every BIOS you can add/change the voltage table but it depends if the voltage circuitry can work and recognize the different VID levels. And yes all turns around the VID level not the label you put next to it in NiBiTor.

So if VID 00 would give 1.00V, and you would use NiBiTor to change the label of VID 00 from 1.00V to 1.20V that will make no change at all as the VID is still 00 and that is what the card looks at not the label next to it. On the GeForce 8800 GT, the VID 00 is 0.95V and highest VID 03 is 1.10V. So you can do what you want but none of the VID's 00 to 03 will give 1.20V. But maybe VID 04...if possible and if the card can work with it.