You can download the software for free as a thirty day (I think) trial. If you have a copy still running on your MAC, start it up, get back to the game selection screen and select "registration". It will open up a page that will show your registration code.
Repeat the process on your laptop and enter your registration code. Problem solved.
If this method will not work, send your email address and approximate date of purchase to firstname.lastname@example.org and they will probably be able to help you.