I have switched the topic to confirmed, albeit I know this means I might not ever get paid by him now unless I involve help, which I plan to do.

He has used the nick Azelphur_ trying to impersonate Azelphur, oddly enough someone he actually did a transaction on XOOM with (source: http://bitcoin-otc.com/viewratingdetail.php?nick=LRP)

Thus hopefully Azelphur can let me know any identifying information and I can bring him to justice. I know with great certainty his IP is 76.124.34.93 which indicates he is from the Philadelphia/new jersey area as the IP is a comcast IP from a NJ headquarter, and some results indicate PA or NJ from records. He has also indicated he lives in Philadelphia.

I have already contacted comcast but haven't got a reply but I think if I get a court order I can get his information from Comcast, or at least MtGox. MtGox has told me they will give me the details of his account if I got a court order as well.

It would make the court/police proceedings much easier if I just had a name and address to go with, instead of an IP address and internet handle, so hopefully one of his previous customers will raise up and let us know any information so we can proceed to get our money back.