I resurrected my 12yr old P3 600MHz machine.
Trident video w/ SB64awe.
I experimented with some of the small disties and
settled on Lubuntu (lxde w/ openbox)
It works very well. I love messing with the old box.

The only hickup i had with the install was that
it wouldnt install from the live CD.
The cure was beefing up the ram to 512M.
No problem with the CD install with a little more room.