Help with product activation
http://service1.symantec.com/SUPPORT...06021715234146

What is product activation?
Product activation protects you from pirated and counterfeit software. It limits the use of Norton programs to those who bought them legitimately. When you install a Norton program, you must use a unique product key to activate it. You can activate your Norton program during installation, or after you install. If you activate after you install, you must do so within a limited time, or the product will not work.
There are several links there for you to try out, including a link for FAQs.