back in 98 I had a 6400 and loved it. 

but..  even if you got x running it would be very very very slow.

I recently bought a B&W G3 on ebay for 20 bucks.  it will support osx without xpostfacto.  the B&W G3 is supported with tiger and it runs quite well on mine.  I have a 350 that I overclocked to 400.

something to think about..  use the 6500 as a classic machine.

Edited by (08/26/06 01:29 AM)
Mac mini C2D 1.83GHz - 2GB RAM - 200GB 7200rpm HD
Sawtooth w/G4 1GHz - 1GB RAM - SIIG SATA w/2x1TB HD
B&W w/G4 600MHz - 1GB RAM - 2x80GB HD
Sawtooth G4 400MHz - 512MB RAM - 40GB HD
Dell Ultrasharp 2007WFP 20" Widescreen LCD
2.94TB Total Storage