I got a new MB a few weeks ago. I went for the poverty pack version with 160gb HDD, knowing I'd replace it soon. With new Seagate 320GB 7200RPM drive in hand I commenced the change over last night. First off, use 'Time Machine' to make a backup to my 500GB portable drive. To replace the HDD on the new MB is the simplest process. One latch to remove the battery cover, one small screw removed from HDD retainer and lift out. Insert new drive. Replace screw and battery cover. Done. Less then 2mins. Now reboot unit, insert Mac OS DVD (supplied with unit). Partition drive using the disk utility that loads from the DVD. Click the 'Continue' button to install the OS and leave for 30mins for the OS to install. The next part is what makes it so easy. At the 'Setup' screen (this is a new install after all), you have the option to import settings, applications and data from a Time Machine backup. Click to select and then leave for the time it takes to restore your data (30mins for mine). And that's it. Done. No friggin around looking for recovery media, understanding Vista backup, reinstalling 3rd party apps. No licence keys required, no errors on boot. I know ALL of this is possible with Vista, but this was so easy. I was expecting to have to reinstall apps, recover data. Not having to do any of that was a massive bonus.