Good Luck.
I don't know what your budget is, but I'd drop a few hundred on any three letter .com domain instantly.
Then, depending what the three characters in the name were, I might keep bidding.
Query the WHOIS and contact them directly is what I'm thinking. Or use the email posted above.
A Brokerage like Sedo would slobber over the chance to get in the middle of your (maybe 4 or more figures) deal.
If the owner has the site up for sale they should tell you where, and if it's not advertised then that's who needs to get your offer.
If you can get to someone who doesn't realize what it's worth on a domain exchange before they find out, you may get a (nearly literal) steal of a deal!
In either case, you already know what you want, and you already know who has it...
