There are plenty of great websights on the internet for dart frogs. Just put it in search and you will get a whole bunch of great web pages and forums to get information from. You will also get some European websights that even though I can not read them they offer great examples and will inspire you for your own set up.
Here are a few to get you started. I have a lot of different sights besides just these but I will give you something to start with.
Here they are: Blackjungle.com, http://www.joshsfrogs.com/,
http://www.vivariaforums.com/, http://www.victri.net/tanks/vivarium_2005-06-20.html

Hope this helps