I have just what you need, in the blister-wrap that has been opened, but it's never been used. I was looking for a cooler for an AGP 7600GT card, and picked it up for [whatever I paid for it] by mistake. My bad decision was born of the fact that I'd grown comfortable using it with my GF4 Ti4600 AGP card on a different machine. I've variously installed the same model in computers for relatives, on a Ti4800, a Ti4200, etc.
There are several different versions of the Zalman ZM80D-HP heatpipe cooler -- lesser versions. They all fit the various GeForce cards. The ZM80D is the best of the lot. I had it on an ASUS 9980 (nVidia) 5950 Ultra AGP card, and I compared it among friends to other VGA coolers -- it was pretty much the best performer among products available in 2004. It kept the 5950 Ultra below 40C when it was getting a workout. To do this, I installed the OP-1 80x15mm option fan, which mounts on top of the aluminum heatsinks attached to the pipes.
Zalman ZM80D-HP heatpipe cooler
The Option fan spins up to some 2,900 rpm, and is pretty quiet at all speeds -- believe it or not. You'd have to get the option fan separately, but they're available and I'm pretty sure they cost less than $10.
Send me a message, and we can work something out. SVC is selling it for $35, and it's yours for $20 plus shipping.