Finally, a simple way to export mailbox information other then the horrible Exmerge! Unfortunately though you do need a completely separate Server 2008 with Outlook and Exchange tools installed.
Managing distribution lists is normally a duty of Exchange and/or Active Directory administrators. The process for adding or removing a member of a distribution list
This is an amazing tool which assisted me in unlocking the grayed out button that appears in copying a user profile in server 2008 and R2.