If you want to run fanless AND quiet, the 9000 Pro is pretty easy to cool down. Just get a big honkin' heatsink (as in a copper one or aluminum/copper) and match the old heatsink to it. Drill the holes to match and make sure that the base will fit flat on the core. From what I understand the 9700 has a weird setup and requires a odd ball base.
For my Geforce2 I put on a solid copper heatsink made for a PIII 1U server case thing. OK, the 6,250 RPM fan is annoying, but it cools down to very cold levels. Get one of those Alpha heatsinks that use the copper base with aluminum pins, freeze it into a block of ice and cut it to fit. That should work great considering that the 9000 (non-pro) does not come with a fan. Be careful and have a good time
If I can figure out how to slap on my Volcano7 copper/aluminum heatsink without destroying the board, I would!