2 users, 3 installs, can we have 2 Norton accounts from the same purchase?

My husband purchased Norton Internet Security 2012 and installed it on 3 machines, his desktop, his laptop, and my desktop.  He has a Norton account and the license is associated with that account.  I also have a Norton account from past years but all products associated with it are expired.  I wish to start using Identity Safe, but I do not want to use his Norton account as each Norton account can only have one Identity Safe online vault.  Can I have my own Norton account connected to my installation of the software we purchased?