Hi all, Time to upgrade my macbook HDD. I have a plan and some questions. Here it is: 1. Purchase 250 GB or 320 GB external 2.5" SATA firewire 400 or USB drive with case. 2. Attach excternal drive 3. Use SuperDuper to dupe my external drive as a bootable drive. 4. Take out internal drive, and put in place the drive from the external case 5. Boot machine and verify all is ok 6. Insert old internal into external case, erase it and use as a backup drive. Anyone done this? Thoughts?