I've done this. Rather than writing a howto I'll just show you a working example. If it helps maybe you could document a howto and forward it to the lists. http://jarvi.ezlink.com/rxtx/ Trent Jarvi jarvi@ezlink.com > Has anyone used the egcs mingw release to do java native calls? If so could >you post a quick paragraph on how? >Thanks, >> -Joe - For help on using this list (especially unsubscribing), send a message to "gnu-win32-request@cygnus.com" with one line of text: "help".