Hello all, Before I begin with yet another question, I want to thank those of you who have helped me thus far with my HD. However, I do have another question... I'll be receiving my new HD (Seagate Momentus 7200.1 ST910021A 100GB ATA-100) tomorrow and need some guidance on how to get OS X up and running on my new HD. Is it as easy as inserting a CD? Would that CD have come with my machine (PowerBook G4 1.67GHz Alum.) or when I bought the latest OS? Thank you! All input and advice is appreciated!