Trading Macbook Pro for tower, need advice.

Motherboard, specific processor, which C2Q, specific graphics card (brand and model), specific power supply (an important point where people tend to skimp). Does it come with a (legit) OS? What hard drive(s) does it have? CD/DVD/bluray player/burner?

Do you have a monitor that you'll be able to use with the new desktop?
 
Thank you for the reply, I asked about all of these and the dealer wanted to pull out of the trade (I know right... a sketchy person on Craigslist!?). Anyway, thank you for the quick response.