1st) put the .mrc file in your mIRC main diresctory
2nd) fire up your mIRC
3rd) Type /load -rs ftpbybock.mrc
4th) To set it up, popups in Menu and channel will appear, select
     Config and a dialog will appear (new in 2.0b)
5th) To start say or shut down the FTP, use the popups

Note: I tested it with mIRC 5.82 so tell me if it does
      not work with your version.