thrownflies: For books you might try Fishing Montana
Amazon.com: Fishing Montana: An Angler's Guide to the Big Sky's Best Streams and Lakes: Michael Sample: Books
or Fishing the Beartooths if you decide on Red Lodge
Amazon.com: Fishing the Beartooths: Pat Marcuson: Books
but I would tend to think your going to get the best advise from Biggie.....he lives and fishes there, you can't get better up to date information than that!