How to Upgrade Licence file ?

Hi - I bought the upgrade licence for Storm and installed it with a upgrade install of  V7. However, I have another computer also running V7 which I upgraded without using the new licence.

So, I would like to copy the new licence into the correct file of my 2nd computer so I no longer get upgrade reminders.  

Is there a way of doing this or do I have to go through the whole download / install process again ?

cheers !