(not my site)...
Seems like a great deal to me...
www.compgeeks.comHP Pavilion Athlon XP2400+ mini tower, 128mb ddr, 60gb hd, cdrom, modem, firewire, 10/100 eithernet, ac97 audio, video.. $330 (referb)
Only question I would have is if it had a AGP slot to replace the video card... but many wouldn't care for emulation only purposes.
But with a quick search from HP's website. The pavilion 700 and greater series are the only ones that allow for a 2.4+ processor. And these seem to all have AGP slots... So it probably (hopefully) does.
Anyone looking for another machine... it might be a great place to start.
I'm considering it for an office machine and let me use my main pc as a pure game machine.
<edit> Thanks for noticing the mistype