Hi guys, this is my first time user for this forum. I want to write up a simple program of a mecury tilt switch with a digital input on the Arduino board. How should my program goes if i want the Arduino IDE to communicate with the Processing PDE? I came across this link ( http://webzone.k3.mah.se/projects/arduino-workshop/projects/arduino_meets_processing/instructions/tilt.html) and I would like to have such results to be shown after compiling. I have tried ways to make both the Arduino IDE to interact with the Processing PDE, but there is no results shown. Error messages keep popping out from the message dialog.

Please help, thanks (: