Hey lllsondowlll,
Maybe I can help you. I've got a similiar problem: My ATA-hdd can't be detected. So I can't install Leopard.
Look here: http://osx.kbot.de/comments.php?DiscussionID=24&page=1#Item_15
I'm trying to inject the kext with MagicISO. I know your problem with the bootability. You have to open MagicISO, open your image and save the Boot-Information (left to the "Bootable"-logo). Then you'll edit your image, load the Boot-File into it (there's a button next to the Bootable"-logo again) and save it (it could take for a while).
That's my way. In this moment, I'm burning the new iso, but I don't know if it'll work, because the new image is a little bit smaller than the old one. Try to do the same. Good luck!