Rebuilding an old rig

Well my HP(s) May have died.... but I have parts from both. All I need is a decent case, a socket 462 motherboard, a way to stick a Zalman onto the 462... or some other cooling solution, and a reasonable power supply.... Try not to go over $200 if its possible... The specs will be AMD athlon 3200 Barton OR a 3000 Barton, 2 gigs DDR-PC2700 ram (4X512) 120gb IDE hard drive, Nvidia 6200 AGP 128mb with a CD-rom and DVD burner. I have a 250 watt that came with one of the computers that ran fine with the specs but I didnt run it long because I feared it might just go up in flames or something...