This is something I was playing with. Originally I just wanted to lock the lighting down low and when the player tried to use the <> keys, he would be presented with a message that he needed a code that he would find in the electrical closet. Somehow it morphed into this. It's easy to install and use and instructions are included. (attached)
Also in the extras folder you will find a file called Game Settings.exe.
Place this file in the folder of your finished game and it will allow the player to configure the setup.ini. If he doesn't have the best graphics card and the game lags, he can turn down some of the settings to improve performance.
Brian.
... and the band played on.