I feel like this is better as a separate topic in terms of helping me find the answer. I once installed something on my Supercard to make it so that whenever I hold Y at startup it goes directly to moonshell. The benefit was that whenever I was in my car or using my DS as an mp3 player I could just hold Y and it would boot to moonshell, but when I wanted to play the DS normally I would just start up the system without doing anything extra. The problem is I installed it like a year ago and I can't recall what it was called at all. I'd love to see if I could reinstall it on my new DSi cart.