Hey Slluxx, great tutorial. I made a quick script to automatically set the system path variables. Just put the script into the root of the folder where you extracted everything and it'll handle all the things for you!
@echo off
SET currentdir=%cd%
setx /M NINTENDO_SDK_NEX_ROOT...
sorry, beein trying to find this file that's been right in front of me for a month now, only to find broken links, and google to prove that it's completely worthless.