CheatCC says, "Apart from the issues I mentioned about lack of integration with the Picture and Sound Studio (and the lack of other colors), there isn't much to complain about. The program has a neat and user-friendly interface, it helps to promote creativity, and best of all, it's free, so what else can you ask for?"
Damn, this has been getting great scores. I own a DS Lite though, so I won't be able to play this :(