|Truly, you would need CPU (Core 2 Duo), Motherboard ('modern' socket 775 like Gigabyte, Asus, etc), RAM (800DDR2), Power supply (wattage, available 12V Amps, proper connectors, etc), Graphics card (PCIe16-2x interface) to start with, plus a case that will fit it and probably a SATA HD and Windows 7. You will be truly building a new computer, so do it smarter and skip that generation and go to the newer i3 or i5 (or even the 2nd generation i5 which is now out). By starting entirely with a clean sheet of paper, you can choose more wisely and therefore spend more wisely and get a system you can be proud of for years. (Right now I am happy with my custom Core 2 system, but I recently built an i3-550 system for an office with mostly components a step or two over basic, and it is FAST, I am imagining what I could do with a 2nd gen. i5-2500K or even an i7-2600K. Unless I hit the Lottery, I will wait a few years.... 6 or 8 cores....SATA 6GB/s....Windows 8....hmmmm)|
You have to be a little bit crazy to keep you from going insane.