I just read this on giveawayoftheday.com.
Check this out, Giveaway of the Day - free licensed software daily. Screen Recording Suite - Screen Recording Suite is a simple yet very powerful screen recording program.
While posting this thread, it said you have 20 hours 22 minutes more to download.
IMO, Camtasia work best, but most of us can't afford it, this one could be a great arsenal tool in IM