Readme for configuration CONFIG.COM is the main configuration program for FreeDOSshell. It can be used to edit the basic settings such as video mode and desktop colors. The settings are stored in the SETUP.INI file. If the config file SETUP.INI gets corrupted, it can be easily fixed by deleting it and then running CONFIG.COM and saving changes after that. The settings are automatically reloaded, if CONFIG.COM is executed from the Control Panel window.