I saw this yesterday http://worknplay.net/get-camtasia-and-snagit-free on Ritu's http://www.cre8buzz.com/profiles/584 blog about free copies of SnagIt ($29) and Camtasia ($299).
Snagit allows you to do screen captures of webpages or whatever is on your screen. Camtasia allows you to create videos.
I've downloaded the software and registered for the licenses which arrived very quickly by email. I'll try to have a play later.
You can't go wrong for free.