that would be sweet, I have run on windows and linux but don't have a mac handy so let me research it a bit and try to package the rxtx bits with some best guesses.
Which version are you on? tiger, leopard, tabby? 32 bit?
also re: compiling, can you run javac -version ? maybe we can sort out the mac java hello world thing.
And can you run java -version for good measure and let me know what it says?
Ideally I would sort out the mac packaging on a mac, in fact I would like to add a mac to my fleet, but if someone has the patience to help sort out the mac packaging on a best guess basis that would probably be quickest.