My first attempt at using the screen recording software Fastone Capture. If the end quality of the capture is good enough for your needs, it certainly is a much cheaper option than the Camtasia software.
FastStone Screen Capture - The Best Screen Capture Software
Its certainly not as easy as many publishers make it look. Hopefully it explains how the animation techniques work.
Here is the link to part 3. It is better in HD if your system can handle it.