Below are a couple of links I have found. I have yet to build any of them but they could be a good start for you.

http://www-personal.umich.edu/~jeffreym/htm/Elevated%20Deer%20Shack.htm

http://www.hcdigest.com/articles.asp?ArticleID=47

http://z6.invisionfree.com/almtnman/index.php?showtopic=159&view=getnewpost

The first one has a pretty good description of the process including picture during the process. The second one is from Hunt Club Digest. It has three pics with some measurements. I think the actual article in the magazine has a bit more details but I have yet been able to locate a copy. The third one has no pitures and is simply a set of instructions.

Let me know what you build and how it turns out. I hioe to put up a couple for next year when my oldest son will be hunting with me.