U-Boat Leader DVG (Dan Versson Games)

Just bought this Vassal module direct from DVG but there seems to be no manual or tutorial for it?
I may have missed something here, if so please point me in the right direction.

and if thats the case, I will be very happy… but rather annoyed, to say the least, if I have just paid $30 for a game I cant now play. :imp: