Man, I could use such a PC aswell.
Case,MB,CPU (boxed),case with PSU (400 watts) $295 USD.
1 GB of Nanya ram (3.3.3.8 stock) $79 USD.
Or...
1 GB of my ram (2.2.2.4) $300 USD.
If the PSU shuts down when you OC then the Antec TP 550 can be shiped next day to your door $100 USD.