Sorry, I'm not much for documentation.  Here's how I set it up on:

GameSrv
  Command=EXEC
  Parameters=\PATH\TO\RMASTERMIND.EXE -D*DOOR32

Synchronet
  Command Line=\PATH\TO\RMASTERMIND.EXE -D%f
  Multiple Concurrent Users=Yes
  Native Executable=Yes

Any problems, head over to http://www.randm.ca/contact.php