I'm running the arduino package on Vista with no problems and had no issues when I installed it. As to the PIR they usually have an output pin that changes state when it sees movement that you would hook to a digital pin and check for that change.
I'm running the arduino package on Vista with no problems and had no issues when I installed it. As to the PIR they usually have an output pin that changes state when it sees movement that you would hook to a digital pin and check for that change.