Since Outlook hasn't used a Personal Address Book in many years, it is
unlikely you were.
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]
> After backing up contacts and recipes from Outlook on a 2nd hard drive, I
> reformatted C drive to kill a bug. I can't find my Personal Address Book
> or
> my wife's Contacts and recipes. This is not good. I finally located the
> Contacts but can't get them into her account. Any help would be greatly
> appreciated. Thank you.