Hi Markus,
Yes, that would work. It is kind of clumsy, having to write a batch file just because I want to pass a parameter to an existing program, but if there is no other way to do it, it will have to be done this way. I was looking for an existing client that might give me access to certain Windows functions, possibly using an ActiveXObject interface, but there seems to be no such thing in FM extendscript. There is an ActiveXObject in FrameScript, I think, and that does not seem to use a batch file to make it work.
Ciao
Jang