I just upgraded my Outlook from 2000 to 2002. Prior to the upgrade, when I clicked on your "Address Book" button when sending a file to a recipient, my Outlook "Contacts" file contents would be displayed and I could drag and drop e-mail addresses.
With the upgrade to Outlook 2002 when I click on your "Address Book" button, my empty Windows Address Book file appears.
I followed the regedit instructions in the link to Microsoft you provided (http://support.microsoft.com/kb/269777/) but my Outlook settings were already -0-.
It has to be something simple as it was working fine with Outlook 2000.
Ok, that worked...But... I'm running XP and didn't have a "UseOutlook" registry DWORD so I had to create it as follows: Edit/New/DWORD Value..then type UseOutlook in the prompted field and enter it. Then double click it and set the value to 1.