Our friends at http://fishexplorer.com have added a page dedicated to fishing in the state directly to our north, a good source of information for anyone planning a trip. Here's the link: http://www.fishexplorer.com/wy/.
If you're unfamiliar with the site, take a look around and then sign up for membership. Established in 2006, Fish Explorer has information on more than 1,100 lakes and rivers in Colorado, California, Florida, Texas and now Wyoming. It also has regular articles by knowledgeable anglers.