Hey folks, I've posted a very temporary tutorial in the forums. Ignore the numbers in parenthesis... those are my notes for the screenshots I took. Tomorrow (or later tonight) I'll clean it up, make it pretty, and add the screenshots. In the meantime, this will get you started if you try hard enough. :)
Here it is in all its glory... lol
http://www.wowtextures.com/article.php?story=20060731144040307