Connecting H2O heatsink to GF 260 GTX [how?]

I would assume there are several screws that need to be removed, since it is a basic design by that of the 9800GTX, which I have. It looks pretty similar. You are going to need some of those eyeglasses screwdrivers, some of the screws are pretty small. Just be careful and take your time.
 
Big thanks guys!

I've tried this before but I had to use so much force that I thought that I'm 'gonna brake it... but now it's off and my water-cooling is on 🙂