Microscope (stage) controller and serial communication (Javacomm)

Dear all,

I am in the process of building an interface for our automated 
microscope (Leica DM RXA) through the serial port (Linux and Windows).

I have downloaded the Prior Optiscan stage controller from: 
http://mitel.dimi.uniud.it/moss/ijstage.php which I am modifying and 
extending (for microscope, as well as, stage control).

I wonder if anyone has had success with this for a Marzhauser stage and 
the Leica (DM RXA) microscope?

The other method, I guess, is to build a macro with included serial 
commands via Javacomm included in the system. Does this sounds right?

The commands are one liners with a carriage return which will read/write 
to the port. Does anyone have example macros with an included serial 
communication example?

Thanks for your time, Andy