Jayney is right
Dont do it - why pay for norton when you can download AVG for free?
AVG is a superb piece of software that will allow your pc to run much faster, will not take over your pc like norton does, will be as good if not better than norton at detecting and fixing any virus intrusion and will sit quietly in the background.
I have removed norton and replaced it with AVG on friends, neighbors and colleagues pc's , frankly it beggers belief that norton still survives as a product, i know loads of people who have changed to AVG and without exception have nothing but praise for it.
Download AVG
HERE