NIS 2009 ----> Clean install of W7

Hi, I was using NIS2009 on my VISTA machine and upgraded to W7, actually I did not upgrade Vista but instead performed a clean (new) install by formating and installing W7 on the "C" Drive (it was not a complete clean install because the original "C" Drive was partition). The problem that I am having is when I place the NIS2009 CD?DVD in the Drive, I am advised that this runs only on Xp and Vista so I am unable to install NIS2009 (and can't get to the updates because the Norton detection Tool isn't able to find NIS on my system).  I would appreciate help in getting (my valid copy of) NIS 2009 up and running. In the interim,  I downloaded a 15 Day Trial Version of NIS 2010 and would appreciate your help.

Thanks, Bob