Here is the other guide I promised. This guide/tutorial explains how to hack the sprites in MMBN5DS similar to the video I posted earlier. The tutorial is available to TREZ members. There is also a new useful tool attached to that post. This tutorial opens up many more possibilities for hacking. Because the DS version of the game neatly creates files for almost anything, lots of hacks can be done fairly easily. There are no size limits with these hacks and it's very convenient.
View the hacking guide