From Koyotesoft.com:

Free Screen to video is a freeware designed to record your computer screen activity in video (screen capture tool).  You can record the whole screen or only some areas of the screen in FLV, AVI, SWF (Flash) or WMV formats. Free Screen to Video is very easy to use and also records the movements of the mouse as well as the sound coming from your microphone. You can thus very easily create videos for help desk, online help, training, education and distance learning.

Download Free Screen To Video

The web application alternative:  Screen Toaster – a free online screen recorder. With this app you can capture your whole desktop or selected areas right from your browser, you can imediatelly upload your files on Screentoaster.com or Youtube.com and embed them on blogs, web pages or your e-mails. [Compatible with Windows, Mac OS X, Linux]

If you use Mac Os, here’s a freeware video screen capture app: Jing. ( Available for Windows as well.)