Thanks, but I think you need to read my post again.
Just to be clear:
I am already running calibre server as a separate process on a freeNAS server (linux).
I am running the management processes on a separate PC, in this case a laptop running windows.
What I am looking for is a way to force calibre to use the calibre server process of my choosing. with some kind of command line switch.
thanks
Bick