All Outlook data is kept in the same file. 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
http://www.howto-outlook.com/Howto/backupandrestore.htm

Signature
Russ Valentine
[MVP-Outlook]
>I recently had to restore my PC to its original settings, so lost my
> installation of MS Outlook of 2002. I've now re-installed it and managed
> to
> find all my old emails but how to I get my Contacts/Address Book back
> please?
> I'm using Windows ME.