progress in mobile control 
Today I had the chance to add some code to the remote control application on the pc side. The main (quite simple) control programm is finished. The com port connectivity for getting the remote commands is not implemented, yet, but prepared.
After SUN's newsletter today I visited
https://jdic.dev.java.net/ which serves JDesktop Integration Components. As told before, I have no real knowledge about native interfacing and the remote control is done by making use of jawin, some win32 calls and the java.awt.Robot class (which is ugly, but it works for me) - so with the JDesktop Integration Components I was now able to introduce a tray icon to run and shutdown the application without a command window.
My overview reads as follows:
pc
- win32 control done
- configuration externalisation (xml) done
- main classes for startup/shutdown done
- tray icon support, but no nice icon, yet
- TODO include com port code
- TODO package application
- TODO document application installation
- TODO document application usage in MobileControl
mobile
- basic bluetooth serial profile done
- basic midlet for bt done, but better error and reconnection handling needed
- raw design of simple midlet control done
- TODO main midlet programming with two lists for application selection and application control
- TODO message protocol connectivity classes
- TODO event driven message handling