He doesn't know who the scammer is. He doesn't know if he has his real name or not. Besides, if the scammer actually is a scammer, he would have used an alias. I'll bet that CaryMG doesn't even have a legitimate email address for this guy. So he wouldn't even be able to track him down through the ISP. Although, if the scammer was dumb enough to use his home computer without going through a proxy, you just might be able to track him down through the ISP.
In all likelihood, there's probably very little that the police could do. You're also dealing with an international border, and the amount of the loss was not that significant that the police would expend a whole lot of effort into locating the guy. I hate to say it, but CaryMG is probably SOL.