How do I show a calendar on the Web?
If you could be more specific, I could probably give you a better answer. However, here goes. You can simply have a user open their mailbox over the Web (must be running the HTTP task on that server), or you can create a view and set the View Style (found on the view properties box) to Calendar. Then make sure the documents displayed in the view have the right fields to display properly in the calendar style views. Check the calendar view in the mail template for the specifics.