Captain Sim 2 wrote on Nov 25^th, 2010 at 8:47am:

The question has been previously answered by our Customer Support. Please check-in to Your Profile and use Customer Support > Search KB > KB# 1758.

Difficult, as I do not own any Captain Sim Aircraft.  I  just run a MP Server  that some of the players  try to fly  the C130  on.

However,  from another post here, I see that  the "Captain Sim"  answer to  this one,  is that  their Product  is not supported  in Multiplayer,    which  only goes to re-enforce  what I have heard  so many people tell me about Captain Sim products, and  their  Technical Support.