With your interest in Education Technology, I recommend you take a look at Wiziq's virtual classroom and authorstream's power point presentation platform. Both are web based platforms, have a bunch of features and free basic service. Here’s a public class recording conducted by Nellie Deutsch on Technology Integration.
It was great talking with you and Susan today about your ipod touch implementation. I'm so impressed with what you've done with these devices....and can't wait to learn more. Thanks for sharing so freely!