So here I am. Using my MB for almost a day now. I m about to change the HDD now myself. I havent done any hardware upgrade myself. Not even RAM. Is it really easy? I m right now looking for ImAlwaysRight`s post where he has a few snaps while he was doing it all. I have a samsung 120GB5400 momentus HDD in a USB case. I want to swap the ibooks HDD with this one. I know it`s compatible. How should I start now. Do I format the HDD first?. It has three partitions rite now and has data on it(I`ve aleady backed it up. So no probs). Which type of format I need. I think there were a few options and only one or 2 out of three works with Mac n Windows both. I`ve never done a completely fresh install ever before. Windows was so confusing. I tried once and finally decided to call a tech instead. Or are all these questions already answered somewhere? Please direct me. I m planning to install Windows on it. But I`d like to get over with the HDD replacement and tiger installation first.