Difficulty installing NIS 9

I downloaded a version of NIS 9 today.  Before I can install I have to uninstall my old version.  In the add/remove programs area there is not an option to remove the program.  So I downloaded the remove tool from the Norton website.  When I ran that it said there is a copy of "Anti virus 9 or later" on my computer and I must remove it before proceeding.  The trouble is that I don't see a copy of Anti virus 9 or any other type of Norton listed in my program list from the start button or from the add /remove programs!  So I am stuck.  What do I do now? 

 

Thanks so much,

Jennifer