Updating driver for shared LJ 1320 on Vista client

Hi,

I just started using Windows Vista. I am logged onto my PC with an account
named 'Paul' that is a member of the builtin 'Administrators' account. I
want to update my printer driver. I go into Control Panel | Printers | Run
as Administrator | Properties. I go to the Advance tab. There is a button
to load a new driver, but it is grayed out.

Can anyone tell me the proper procedure for updating the driver on this
Vista client PC.

Thanks,
Paul
--
Paul Kraemer