Outlook does not have an address book. The file you need 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 or transfer:
http://www.slipstick.com/config/backup.htm
http://www.howto-outlook.com/Howto/backupandrestore.htm
http://office.microsoft.com/en-us/assistance/HA010771141033.aspx

Signature
Russ Valentine
[MVP-Outlook]
>I know I've seen the answer to this somewher so apologies if I'm just
>taking
> up space here, but how do I save my address book to another HDD, because
> I'm
> going to have to formet and reload on this one.