I worded my last post pretty bad. I've actually already ordered the computer.
I had tried building my own computer with help on here a while back, but it was basically a disaster. I got everything hooked up, I booted up, selected install from CD, then I realized I had forgotten to put my CD in, so I shut down and when I tried to reboot, it wouldn't turn back on. Fans whirred for half a second then nothing. I tried checking for help on here, but I was running out of time on my money back with Newegg, so I just shipped it back to be safe. They wouldn't accept my video card or processor for some reason, so I kept the Video card for a situation like now; if I could find a decent computer with a ****** Video card.
So now my best move would be to upgrade the PSU and stick in the video card? Or is that more of a precaution than a necessity?