This is what I would get since you're "damn near broke."
Thermaltake 430w
$41
If you want to spend a bit more (though you don't need to):
Corsair 450w
$70
Thermaltake 550w
$80, modular
Enermax 400w
$80, modular
PC Power and Cooling 500w
$85
Like I said before, you could easily get by with the $41 Thermaltake PSU. If you wanted to get a more powerful PSU, any of the others are very high quality. 2 of them are modular (meaning you can take off any cable from the PSU that you don't use) but that's just a preference.