well osx did not magically appear there did it? there are tons of ways to do things, you can pull the drive and do it externally, load another partition with 10.6.0, dance around it and pray, my favorite method is the hammer method... it lets you customize and rewrite the bits on the hdd in a single blow. also i think there where some older distros that had a live osx cd like or even unbuntu.
i am sure all those problems exist after the os is running not before... if not then there is something seriously wrong with that laptop or it's bios or settings "Hammer Time?" lol.