. This means you can do almost anything to it except preventing others from using it (ok, I simplified things, read GNU licence for details).
Here you can download driver executable
Here you can download driver source
Running mikd: simply type:
mikd 1 120
at the command prompt. First parameter is COM port number and the second is dot length in milliseconds. You have to try several values to find comfortable speed. Press Ctrl+Break or Ctrl+C to stop the program.