Hello, I feel my question is maybe a bit childish, because one should know the answer, but I decided to ask though I know that until the last generation Intel-iMacs* nearly all HDDs regardless what firmware could be used in Macs of the PPC-time and Intel-era. (* new iMacs need the apple-firmware to make use of the temperature sensor). Is this the same with optical Drives? Can I just buy any slim DVD-RW drive (or even DVD-DL-RW) and put it in an iBook or PowerBook? I guess no, otherwise I would have found something via google, huh? Thanks!