Thanks, Vasilisa, Sorry for the late reply.  I was offline for a couple of days.  If I understand correctly, I can use Radmin VPN to Host a game on my PC, have people join my game and I can play in the same game?  Is that correct?  So do I launch Radmin VPN and Create a New Network, then I launch my game (MW4Mercs) and select Host a Game.  I then send my game IP address (IP listed to me in Radmin?) to my friends, who put the IP address in their Game, Join Game Option and select Join.  They can then join my game using the IP address I gave them.  Is that correct?  Thank you so much for your help.  

Thank you very much, Vasilisa.  That is just what I needed to know.