If you're using the Steam version of shipsim extreme there is no vstep folder on your hard drive (It is actually under the program files (x86)\Steam\Steamapps\common\ship simulator extremes\projects\shipsimextremes\docs and the manuals can be found in this forum at:
http://80.95.161.114/shipsim/forum/index.php/topic,21468.0.html (http://80.95.161.114/shipsim/forum/index.php/topic,21468.0.html)
The manuals are rather sketchy at best.
Still the controls file will be nice when vin_sun gets it finished for sure!!!!