did u extract the files or did u manage to replace hex code? or both?

well about the boot.bmp file u can replace it with activesync it wont make a difference i attempted that a couple of times.
it might be located in 2 places never know.

about the small file being the boot loader i think you are verry right on that one.

i wonder if we canuse cooked up roms from xda developers i think it might work as long as we can change format from nbf to nb0.