The Personal Address Book of Outlook has been included in the default setup. However, there are cases that you have to add the Personal Address Book by yourself when it is not available. To do that, follow the steps:

1. On the Windows Start menu, point to Settings, and then click Control Panel.
2. Double-click the Mail icon.
3. In the Services tab, click Add.
4. A window named Add Service to Profile appears, select Personal Address Book. Then click OK.
5. Specify the name and location of the personal address book file (*.pab) you wish to place. The default path is set to "C:\Exchange\mailbox.pab" but you are recommended to use the path "n:\exchange\mailbox.pab".