Camstudio is a program designed by Microsoft to help people in screencasting. After installing this program, you can record all videos and audio files that are played on your computer. In fact, in the simplest of terms, it is a desktop screen recorder. You can get wonderful quality videos in AVI format after installing this tool. You can also convert these videos from AVI into Flash format. It is an open source app that you can get for free from internet. If you are not able to start the program and there is an error message that says MFC100.DLL IS MISSING CAMSTUDIO, you can get this dll file from here for free.