Thee is no address book in Outlook. The file you need to back up is your
Personal Folders file (*.pst) It's where all the mail, calendar, contacts
etc are stored.
Take a look at these pages for info on Outlook data backup:
http://www.slipstick.com/config/backup.htm
http://www.howto-outlook.com/Howto/backupandrestore.htm

Signature
Russ Valentine
[MVP-Outlook]
> I would like to have a copy of my address book on an external drive or CD
> for safety sake. How do I?