@cableghost, the SmartThings integration can run a command on your computer, but you can't use the integration to trigger anything in SmartThings - it's a one-way street from SmartThings to TRIGGERcmd servers to your computer.
Does EventGhost run a command to turn your lights on or off? If so, you should be able to run the same command with TRIGGERcmd.