[mightywombat]

You're a genious....
I totally understand the concept. I'm just struggling as to how I hook it up.
What I tried today (and miserably failed at) is this:

I found a 4-cable pwm-like Y(splitter)-cable. On an interrupt pin (pin1) I stuck the ground to the ground, one of the two signals (The "A" signal) to the signal pin and the +5 to the +5. Then I stuck the split ground to the ground on digital6 and the split +5 to the split +5 and the other signal (the "B" signal) to the signal pin all on digital 6.

Is this correct?

I'm very/pretty sure of my code, as I have played around with interrupts a good deal and have a general knowledge of how they work and how to implement them...