Out of the many versions out there, I find that this one is the best, and I'm hoping someone will transcribe it :)

http://torley.com/torley-wong-kingdom-hearts-piano-passion
http://www.youtube.com/watch?v=pAnIB_Y7suM

bump

hate to be mean but you do know there is a whole thread just for KH... lol they might help out if ya post it there