The QuietPC stuff I ordered should arrive tomorrow, so in preparation printed out the Radial Fin Installation and SilentDrive Installation instructions
I bought a Zalman CNPS 6000CU CPU Cooling Kit from QuietPC. See that site for "how to install" software flash movies!
I also bought a Zalman ZM-NB32 Northbridge heatsink to replace another fan on the mobo
Finally, I got a molex SilentDrive to reduce any rattle from the HD.
Found this Review of SilentDrive with installation notes and photos.