Moving License from one PC to Another

I recently renewed by 5-user license to Norton Antivirus 2011.  Of my 5 PC's, I want to use my license on a new computer and inactivate the product on a PC I don't want to protect anymore.  How do I do this?

I recently renewed by 5-user license to Norton Antivirus 2011.  Of my 5 PC's, I want to use my license on a new computer and inactivate the product on a PC I don't want to protect anymore.  How do I do this?