OK, after carefully following the directions I've gotten OSX installed properly. The performance is very good for a G3/400mHz upgrade card with 160MB+ RAM. Using the patches provided by Ryan Rempel (kudos!) the features that needed patching from the beta work too!
Do a search of the OSX support forum for 'OldWorld' and you'll find the links you need.
After installing the Powerlogix software to enable the L2 cache, its a VERY useable machine as a server. I don't know if I'd like the video speed because of the built in video for the 7600. But its DEFINITELY useable!
BTW, the extension "wish I were" does not have options for anything beyond the 9600 series and won't work. I found this extension at www.MacFixit.com
Just a follow up to let anyone interested know.