Can any one tell me where I can get some good resources on communicating with devices through my serial port. I'm hoping to design an app to allow users to remotely interact with a series of switches through the serial port of a pc. I'm goin to set up a web server on my personal laptop and try to switch on a light and to check and see if another connection is on or off through the serial port on my laptop from a remote pc. Can this be done because I know java (hoping to use Java applet or JSP pages) has restrictions on such remote connections and if so how?