It's been a few years since I did anything like that but I used a program called Cam Studio. It used to be a commercial program but I looked it up and it's now freeware (with donations welcomed). As it's free, give it a try. Here's a link >
http://camstudio.org/
Edit: I know it was easy to use because I'm not the brightest bulb in the room when it comes to technology and I didn't have a problem using it.