Unity Pro and upgrading computers

Hey. I’m starting to consider buying a new computer and I want to know if there is any way of transferring unity pro onto it. I downloaded unity pro from studica, who offer half-price deals for students. http://www.studica.com/us/en/unity/unity-pro-4-student-commercial.html

It says in the information that it is ‘good for one activation on one computer’.
Does this mean that when I eventually get a new computer I have to purchase unity pro again, or can I just uninstall it from my old computer and then I’ll be able to install on the new one or something like that?
Thanks very much for your time.

did they give you a serial? did you save it? if not you can just take all of the unity 3d files and transport them to your other pc via a thumbdrive or a HDD