Quote from macal425:
There's a small program in the Mac Utilities folder called Migration Assistant". It may be what you're looking for. I haven't tried it, but I remember seeing it there recently.
Quote from rickf:
IIRC you can drag the Applications folder to the new hard drive, and then copy your preferences from /user/library to your new machine.
Might have a conflict if you run both copies simultaneously on the network with the same serial #, though.