private void frmMain_Load(object sender, EventArgs e)
		{
			XmlSerializer xml = new XmlSerializer(typeof(DeviceInfo));

			StreamReader read = File.OpenText("RModems.xml");
           	DevInfo = (DeviceInfo)(xml.Deserialize(read));
            read.Close();
            
			devicesBindingSource.DataSource = DevInfo;
        }

		private void frmMain_FormClosing(object sender, FormClosingEventArgs e)
		{
			if (DevInfo.HasChanges())
			{
                DevInfo.

				StreamWriter write = File.CreateText("RModems.xml");
				write.Write(DevInfo.GetXml());
				write.Close();
			}
		}