I am curious if you have tried advertising in some of the other forums for developers (sourceforge.net, etc)?  I'm not sure this forum gets volume or would be responsive to your challenge as largely people here are your competition.  Second, though I've played around with a simple peer-to-peer network using C#, I would not be the person you're looking for, as it seems to me peer-to-peer networks are programmed by specialists.  What is a typical person in this field that you are interested in?  What language do they use, and how many years of experience?  Just for my own curiosity.