Another user can grant you access to his or her contacts.
In the Folder List, right-click Shared Contacts and select Properties.
The Shared Contacts Properties dialog appears.
Select the Subscribe tab.
In the Add Shared Contacts dialog:
If you know the userID of the contacts to which you wish to subscribe, enter that userID and click Query.
If you do not know the userID of the contacts to which you wish to subscribe:
Select the user from the list in the Address Book dialog and click OK.
The userID and contacts are listed in the contacts list.
In the Add Shared Contacts dialog, select the userID from the contacts list and click Add.
Select the userID in the Shared Contacts Properties window and click OK.
The user's contacts are added to your list of subscribed contacts.