Hi I'm a teacher considering buying an iPhone 3G. I've read that the 2.0 software includes Keynote attachment support. As I give my lectures using Keynote, I am hoping that I can attach the video cable to the iPhone 3G and display my presentations instead of having to carry my Macbook to class. My questions: Has anyone tried this new email attachment feature and does it play Keynote files embedded with video? Many thanks for your time and help!