Thanks for the info. In my wisdom I left it with my LBS so they could try and find one as well, so I don't have photo to go by currently. I'll have to swing by on Monday and see if we can find one that matches up. The most likely one is:
http://derailleurhanger.com/dh017.php
although without the hanger its hard to compare.
Uuuuggghhh what a PITA.
To top it off, I'm planning on heading to Greenville, SC Friday for the George Hincapie Gran Fondo.... Hope I can get it straightened out before then :-)
Thanks!