Just joined the team the other day. I've got 3 machines folding right now, and will have 2, maybe 3 more added very soon.
Machines Currently Folding:
AMD Athlon XP 1900+
Intel PentiumIII 1GHz
PowerPC G4 1.25GHz
Going to be adding:
AMD Athlon XP 2500+ (Parent's House)
Intel Celeron 733mhz (Parent's House)
AMD K6-2 500mhz (Needs new cpu fan)