sp = new SerialPort();
            NetworkStream Ns ;//= new NetworkStream();

            Stream Is;
            String KEYNAME3 = "HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM";
                string COMPORT = (string)Registry.GetValue(KEYNAME3, "\Device\USBSER000", "NOT VALID COM");
                Console.WriteLine("nOutput3: " + COMPORT);
                sp.PortName = COMPORT;
                sp.BaudRate = 115200;
                //serialport.ReadTimeout = 1000;
                sp.Open();

    // Here i need a NetworkStream from Sp
        }