How do I transfer a trial version to my regular subscription with an open activation?

Greetings!

I have a current subscription to Norton Internet Security 2011 with an open activation license.  I just got a new computer that came with Norton Internet Security already preinstalled, so I activated that trial instance.  This will soon expire.  Is there an easy way to transfer that trail instance into my available regular subscription?  Or do I have to do this the hard way... Initial the whole thing, then download, reinstall, and reconfigure it through may regular subscription?