I am going to be doing the same thing in the next couple of weeks. I ordered a 120GB drive for the MB, and an external enclosure to facilitate the transfer. I plan to use the old drive in the enclosure when I am finished, to have an external drive for use with Time Machine.
Other World Computing (
www.macsales.com) had good pricing on the SATA drives (approx $80), as well as the SATA external enclosure (approx $35).
Here is my plan:
1. Install the new drive it the external enclosure
2. Initialize the drive with Disk Utility & verify partition format
3. Use CCC to clone my internal drive to the external drive
4. Pull the new drive from the external enclosure and install it in the MB
5. Keep my fingers crossed and reboot
If all looks good, and everything survives the transfer, then I will install the old drive in the external enclosure and initialize the drive for use with time machine.
Back in the day, I did this several time with SCSI drives and a PowerMac 8600 with additional drive bays. This is the first time I have tried this with an external enclosure and a MB.
Seems like it should work though...
Worst case, I will put the old drive back in the MB and I am right where I started...