Steve..
Scroll down to where you see, "I have a Norton 2006/2007/2008/2009/2010/2011 product", at the below link. Running the tool should uninstall it without a problem.
Download and run the Norton Removal Tool to uninstall your Norton product
If you do encounter any problems, try disabling any Symantec/Norton related processes, prior to giving the tool a second go around.
Best of luck..
Carol
I bought this AMD Athlon box in 2006. It has half a gig of RAM, 50 GB of hard disk, and a 500 GB extra slave hard disk I put in last week purely as a place to back up all my files.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic