Samsung Moment :: Boot Animation Reverse Engineering

My android is rooted. It tethers, plays live wallpapers, it does all the other fancy tricks it's supposed to, I can even switch up the boot animations without having to flash the internal memory each time (use the boot animation changer app from the market-- you can go into the downloaded folders and switch what screens are actually shown-- cut-n-paste), but how do you CREATE boot animations?? I understand the whole "slide show of *.png" files, I'm lost at the disc.txt file. Does anyone know what each set of numbers represents? I've fiddled around with this and every time I've put something together, it just don't work. I've got the droid screen followed by the Decepticon symbol spinning around, I've got the one that forms the Decepticon out of pieces, then goes to the matrix rain. I want the symbol to form, then have the spinning symbol. So far, when I piece it together the screen stays black. Any recommendations? I'll post the zip file when it's done, has tons of potential!