Does anyone know how difficult it is to replace the optical drive in an original MacBook? And which brand is bootable. My daughter's MacBook Optical Drive is not reading CD's or DVD's and the Genius Bar said it would run nearly $400.00 to replace the drive since it is out of warranty. I'm also curious if there might be a known failure issue with these drives. This is really the first time since 1998 that any Apple product I've owned has had a real hardware failure, so it's clear that the quality of the drive is probably at fault.