This isn't the OTF, reply with answers man! To the guy with the question:
Go to google and search around, and also, search "coolbits" without the parenthisis and there should be a link. Just say yes and ok to everything, even the registry things. Open up you're GUI Control Panel for nVidia, and there should be some newer options. When you OC, move it around 10MHz at a time, and mainly focus on you're memory. I don't know why you'd want to OC a great card like that, but w/e floats your boat is good for you right?
Anyways, good luck and don't fry it!
P.S Try looking up other nVidia Overclocking Programs in google, and see what you get.