You don’t say what version you are using, and I’m not clear if your shared calendars are in Public Folders. If they are, in Outlook 2003, you would do this: for the user, open Outlook and go to his Folder List. Find All Public Folders and expand it out until you see the calendars you want. Right click on one, then click on Add to Favorites. The calendar will now be shown under a section labeled Other Calendars when he goes to his Calendar.