My Dell E510's graphics card crapped out, so I picked up a refurbished ATI Radeon X800 256 card. Only problem is it did not come with the cables, power supply, etc. Also, my basic Dell PSU (305w) doesn't even have an available connection for the card, besides a tiny "P7" 4pin strange connector. I'm guessing I need to upgrade my PSU to one with more connectors?? Thanks...