I have updated SPSFAQ060124 - Can I make a Web Part that displays a Shared Appointments Calendar/Contacts list/Discussion Board? with some info from Ehud Tam on how to display the "Outlook Today" page. It's really useful, have a look. I'd like to know a definitive way to display Exchange public folders. And a control that lets you display a collapsable tree of categories in the category web part... Anyone?