The file you need to 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

Signature
Russ Valentine
[MVP-Outlook]
> Can anyone tell me the file name and extension where
> the "Outlook" contact data is located?
>
> Thank you.