Hi Neo; I am operating an CAM program from two different locations, one of this location is portable, I mean one of this location is moving between 10-60 meters far away from the other location which is main and controller(PLC) is communicating with this main because main has CPU unit , harddisk, keyboard, mouse and monitor. Away location has only keyboard, mouse and monitor. In this system a transmitter and receiver used to operate the same program from to different locations with no problems and extra jobs. To see the details of this transmitter and receiver , and also see the application I strongly suggest you to enter http://www.bomara.com/Cybex/pccompanionplus.htm web site. I hope this type of application can help you. This will solve your problem there will be no extra job or any possible problems. I have this system in a CNC machine this CNC is a fabric cutter and brand of this CNC is GERBER. We are operating Five CNC machines which are controlled by two locations in each with no problem. best regards