Very nearly anything made in the last 30 years will work fine with your setup. The only caveat is that the derailleur will need to mount to an adaptor claw to work on your frame. If yours is bent, you can get them at any older, established bike shop. Here's what to look for:
http://harriscyclery.net/product/var...r-claw-963.htm
__________________
Jeff Wills
Comcast nuked my web page. It will return soon..