So i've decided it's time to upgrade my three and a half year old powerbook's hard drive. I've found some great tutorials at ifixit on how to replace the hard drive, but what's the best way to install os x on the new hard drive and get all of my files on it? I don't really have access to an enclosure without voiding the warranty on my current external so i don't want to take that route. Can i just boot from the 10.4 disc once i install the new hard drive and install os x that way or does 10.0 need to be installed first or something? thanks!!