With the YouTube craze, everybody is looking to get free video editing software.
Camtasia usually costs a couple hundred bucks but you can get it for free if you don’t mind using an older version.
Go to this site… http://www.techsmith.com/download/oldversions.asp
Then download version Camtasia 3.1.2
Install it and you’re up and running.
Check out SnagIt as well if you’re looking to capture images or videos from your screen.