The author show how to install FreeDos which is a free open source version of DOS. He shows how FreeDos is made up of many programs and how they are contributed by many people over the internet. He show how to install the DOS in a Virtual PC. He explains that all the old DOS programs can be easily run in this FreeDos application. All the old DOS applications and games which were available then can be easily run in this program and the author even suggests to contribute to this open source program. By watching this video you can run your good old DOS applications and get a reminiscent feel of the old DOS applications.