Hi; Maybe this is right in front of me, but can't find it. anyway, in Exchange 2003 you could look at the mailbox store and see a last logon of each user on the mailbox and make a good estimate of which users were using their mailbox and whether it was by OWA or Outlook. Is there a way to glean this info from Exchange 2007, and if so, how? Thanks much! Lee Ann Swanson Connecting Point Computer Watertown, SD