Silverlight with WCF has to use raw Sockets to connect to server

I've created a silverlight application which currently only works on the asp .net development server.  The problem is that when I publish the project to my local IIS 7.5(running windows 7) web server, it does not work.  The problem, I think, is with IIS not giving the application permission to create a socket.  There might also be a problem with the WCF communication, i use polling duplex.  

I cannot create a socket nor can I communicate with my wcf service.  If any code is needed please let me know.