MDK force feedback readme. Contained in this zip file there are the following files: mdk(something).exe The force feedback enabled executable. There may be one or more of these. mdk_*.frc force files for the joystick mdk_ff.dll the dll file for force feedback. readmeff.txt this file Before you start, you must have DirectX version5.0 installed on your machine, and all the relevant drivers. If you do not have this, it can be obtained from Microsoft's web site. You must also have the FULL VERSION of MDK. To install, simply copy all the files here into your MDK install directory (default = c:\shiny\mdk).