You need to provide more information. The guys name, address, email addres etc.
Any info. How the money was sent? Money order, PayPal?
You haven't provided enough info to find a solution.
If this is the same guy, go look at his photos on his MySpace page. Holding alot of cash, sitting in a $150,000 car, brand new truck all on working for WellsFargo as a teller and being only 22 y/o. He also seems to have alot of friends and contacts in Nevada as well.