Installing NIS 2012 on new computer.

My subscription for NIS 2011 isn't up until March 2012.  My computers have been updated to NIS 2012.  If I buy a new computer do I have to install NIS 2011 from disk and then upgrade to 2012 on the web or can I somehow just download 2012 and then use my 2011 product key to activate?  I always buy my software with a disk rather than download from the product site.

 

I understand number of uses - not a problem.

I know to completely remove any other security software prior to installation.

                                                               Thanks