I have a Dual 500 with 768MB RAM and 2 HDs (40 and 20 GB I think) -- box was used as a desktop for a few months, than sat on the floor when I bought my Cube as a 'quiet' thing to go with my Cinema display. It's in great condition, I can wipe the drives and give you a 'virgin' OS9 install if you want. Has the ATI Rage card in it.
I hate to part with it - but want to try and move some of my non-used hardware out of my home office to get rid of my techno-clutter - and would prefer it land in a good Mac-friendly home.
Drop me a note rforno(at)infowarrior.org if you want to talk. I'm in DC.