The easiest way would be in the ubbt_unregisterednav.tmpl and ubbt_registerednav.tmpl to remove the link to the calendar.php file, then in your config, set it so that only admins can post events.... that way regular users won't see the "add a calendar event" when they make a post. <img src="https://www.ubbcentral.com/boards/images/graemlins/smile.gif" alt="" />
