Before you say "why?" Lemme explain myself. I made an awesome new shell for my ds lite and i thought it'd be cool if i could change the ds's main menu to match the theme. All i want to do is: 1. change the sound that plays on bootup, 2. Change the background color of the main menu, and 3. Change the color of the grid lines. Every other feature would remain unchanged. So far i've managed to dump the firmware and decrypt it using fwunpack. Now i have a bunch of .bin files. Not sure what to do from here. Do i need some kind of decompiler to turn it all back into c++ code? This reverse engineering stuffs new to me. Could anyone point me in the right direction? Any help would be appreciated.