I have a 2 Year old home made PC with a 2 GHz AMD CPU and 1 Ghz of Ram and an All-In-Wonder Video card with 256 MB of VRam
What motherboard...nvidia ?
Do you have PCI cards for sound and ethernet,....or do you do dial up?
Printer interface?
If i were you i'd go with Mepis, PcLinuxOS or Ubuntu... maybe try all 3 they're free... distrowatch.com Mepis 6 FINAL will be out in a week or so...
Mepis 6 uses the Ubuntu pools/repos... :)