Alright folks, I just updated the OP with some more information on GTX 260 Bios modding. It's extremely easy, I provided links to the most updated versions of NiBitor, GPU-z and NVFlash I'm aware of. I recommend using GPU-z for backing up BIOS for the simple fact I can't capture my GTX260 bios in Vista x64 with NiBitor...if you are capable of doing so, I'm sure that's perfectly fine.
Lemme know what you think, what you would like added/removed/changed. And I'll post it here too, I'm not responsible for anyone attempting this, neither is TPU or anyone in this forum nore the MFG of the card, if you choose to do this, you are responsible, so pay attention, if you take the right steps, you'll be safe.
