Remove Norton serial code

My previous subscription to Norton 360 expired, so I got a new one. The problem is that the previous one has been logged somewhere on my computer, because when I try to re-install it doesn't ask me for a serial code and just ends up expired.
So how do I delete it and use my new one?

>>7
You must be one of the morons that let their file systems get more than 70% full, so it's your own fault.

>fucking learn to use computers correctly.