Is there a quick way to add a user to multiple shared calendars?

Example:
I have say 10 calendars that are shared amongst staff in a customer services
department. New member joins the department and needs access to all
calendars. I currently either have to go roun each PC and add the user or if
they are remote users log onto a PC as that user and add the new user
manually.

I am looking for a solution where I can add new user to all 10 calendars at
once. Possible?

I am running SBS, Exchange 2003, Outlook 2003.