Ok, so I ordered an ATI Radeon 9800 so I need a new power supply(old 250W). I have a compaq presario 5000 running on 768mb ram/gForce2 mx 400/WD 120gig HD. I ordered a Demon 580W power supply only to find out that it would not plug into the mobo...(came with a 20 pin connecter mobo has is a 24 maybe more)So I'm currently searching for an adapter. Or do I just need to order another power supply?