Talk about the technology. Answer their questions. Have some fun with the technology to demystify it. Help the distant students be better distant students. Especially in the first couple of weeks, make a conscious effort to promote interaction.
Television is a horizontal medium.
Develop a gameplan. This is a topical outline of your course with a visual component added. Many first-timers mistakenly think it's a straightjacket. It's really just a starting point. Just as a coach makes adjustments as the game unfolds, you, too, will adapt your strategies as the course moves along.