Well thats the window that you're looking for. Nearly all the files that you'll find on the disc will be specific types that you won't be able to open. But the game was created on a PC so there is a chance that the creators left certain basic files in some of the subfolders. Have a look around for files that can be rocognised, or do a search for .txt files as they are the most basic.
You must also remember that the video files that you're looking for won't be in a format that you're computer can read, so I suggest looking for cheats.