I would go for a regor dual core amd; used they go for $50 or less. I recommend a biostar or msi board with an hdmi port for blueray. If the board has this port, then you know it has a newer chipset. Newegg had one two days ago for $40 after rebate, but it sold out. Look for a used case on craigslist. I found an antec for only $20 this morning; same for the power supply. The power supply will depend on your video card requirements. If you go with onboard video, then any 400w ps will work fine.