Noron Antivirus…

I would like my Sisterinlaw to install Norton SystemWorks into here computer to aid in the care of the system. It however has Norton’s Corporate Edition Antivirus. I imagine loaded by the Dell. Before it will allow you to install SystemWorks it asks you to uninstall the Corporate Edition. Is this a wise decision, can she subscribe, scan the system, unistall the Coporate Edition, install SystemWorks – with the regular antivirus – and still retain here original subscription.