There's a great article on Distance Learning By Ken Gordon, Tech Learning on Server Pipeline. [Click here for the article]
It details how to implement distance learning software into the classroom. It's a real top-notch article. However, in my experience, in a rather large organization, distance learning is easier said than done.
Now, let me set the stage and unequivocally state my support, admiration and desire to use distance learning software in a variety of circumstances. As an educator, I can find many uses for distance learning, from providing students with "canned" lecture for review purposes, to running "live" classes. The only drawback I have found is that as the lecturer, I am unable to look at the faces of my students.
For those who don't teach, there's nothing like human interaction to motivate an instructor. None of us were born with poker faces. We wear our feelings on our sleeves, as well as our faces. How else do you know someone is under the weather, or has that "glow" of something special has just happened? You look at their face.
Students are no different. As you lecture, and look at their faces, you see expressions that tell you a) they're bored, b) they're fascinated, c) they understand and d) they're just plain lost. Each face is different, and because they're fascinated doesn't necessarily mean they understand.