Hi pkrchap
Welcome to Tech Support Guy Forums!
*Outlook Express*
Locate the directory where Outlook Express keeps it's Message Store:
Tools > Options > Maintenance tab > Store Folder
Message files are in .dbx files, save the entire directory.
Open the Address Book in Outlook Express:
Help > About Address Book
this will show the directory of the address book, its file extension is .wab
*Microsoft Outlook*
File > Data File Management
This will show you the directory and names of the Personal Folders (.pst) files.
Select a file and click the Open Folder button to view the directory containing the .pst file(s).
Let us know if that helps or not.