Jay,

I was thinking of heading up there this weekend. If I do I'll let you know. But in the mean time here is a little info:
http://www.flyfishingwis.com/
http://www.driftlessangler.com

There are some nice streams west of Madison with Black Earth being one of them close to Madison. If you go a little further west there is the Kickapoo River and Timber Coulee. The web sites above should help you in your research.

Good luck,

Pete