Location of file containing Personal Address Book entries

Hello, folks:

Here's an interesting quandary I hope someone can help me with. I
recently got a new computer with Microsoft Office Outlook 2003. My IT
guy at work got it all set up and copied my Personal Address Book file
onto the hard-drive. Since then I have been putting new addresses into
the personal address book and I'm able to retrieve them when I click
the little "book" icon. The problem is that I can't locate the actual
file where these addresses are going. I've searched everywhere and I
no longer seem to have a "mailbox.pab," which is where these addresses
used to be. I'd like to back-up the file and have some
transportability. The earlier version of Outlook I had provided the
full path of the personal address book file. This version just says
they're in Personal Address Book, with no additional info about
exactly where this resides. The Contacts folder in Outlook does not
contain the new addresses I have been inputting.

Does anyone know where Outlook 2003 keeps the file containing the
Personal Address Book? My so-called Information Specialists at work
are completely stumped (or not interested in helping me). Please drop
me a line if you have any hunches.

Thanks a bunch,
Craig

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Craig Cochran
Center for International Standards and Quality
Georgia Institute of Technology