$350 delivered in the TC metro.  Just add your own case........

Abit AT7 mobo (www.abit-usa.com)
Athlon XP 2600+
1 Gb PC2100 ECC registered ram (4 x 256mb sticks)
Antec PP-352x 350 watt power supply

Everything works, just updated my workstations and these are the  
'leftovers'.