I just built a new combo for a friend using all new parts from Frys and an existing ATX case I had. ECS mini-atx board with an AMD 5300+ dual core processor running at 2.6 ghz (combo was 89.99), 2 gb of DDR2 dual channel memory (19.99), 2 new 120gb SATA 7200 rpm hard-drives (ebay..60 bucks shipped), 1 ide Samsung DL DVD+-rw optical drive (29.99 at Microcenter), 450watt PSU, a clearance CPU fan at Microcenter for 5 bucks, new keyboard and optical mouse...and currently using built in Nvidia graphics set to 256megs...and it works fantastic and is fast as hell. I threw in a Linksys PCI wifi card I had laying around. Total spent was about 300 or so. I'm pretty sure it could handle some games.