To set up the enviroment, install:Then add python to your $PATH. Build.bat will then compile whatever your C\ARM code is into the Launcher.dat.As far as how to set up the makefile and all that, I can't help you, I don't know that much yet. But I was able to get other users code running and am studying what they did.Now, to get the launcher.dat to actually do something once it's on your SDCard, get a copy of Fierce Waffle's ROPLoader.nds from the first post, put it on your DS-Mode flashcart, run it, press home instead "A" once it's verified, then go into DS Profile and it should launch (Or crash, but if it crashes then ROPLoader worked)