Hello. It's corrected, now you can choose display and instrument port. This GUI was ment to be simple, so for now it suports only few settings. Either way it's possible to correct command line directly in the window bellow. I know this is not user friendly, but for starting... New archive is attached and also on http://x3.ntf.uni-lj.si/~gojc/ <http://x3.ntf.uni-lj.si/%7Egojc/>. Thanks for ideas. Gorazd