I think this was a nice video, but very difficult to see what Rebecca was actually showing on the screen. How about using screen-capture software (e.g. Camtasia) to directly capture the screen video? According to Camtasia's website
http://www.techsmith.com/products/studio/default.asp, Microsoft already uses Camtasia to produce Windows XP demos.
Thanks for the video ... I will stay tuned for more info!