camtasia is great for the 30 day free trial, if that isn't long enough though use hyper cam or keep re-downloading camtasia
If I were you I would do what Chris said and get camtasia's 30 day trial. The recording has really good quality, and has a cool zoom in feature that is easy to edit in. Also with camtasia they have a feature to highlight around your mouse which is really cool. Here is a link if you need it: http://www.techsmith.com/camtasia.asp Hope this helps!