Well, here's a cpu-z report if it helps.
CPU-Z 1.44.2 HTML report file
As for the PSU, I have no idea or how to check.
Oh, and for budget. The most I'll blow is maybe 120. I have alot more, but there's no point in investing too much on a PC that will have such an 'ancient' processorin a year or two. Just looking for a way to play modern games until I get some money.