Thanks for looking into this. I think I'm a bit confused by the whole serial monitor thing!!
Can you explain what the two additional commands you added do? Are you able to get the Arduino Software to print results without the Serial monitor? And then also Processing? Being able to see how the two communicate would be very useful.
Do you get the lights to light up straight away or did you just look at the data between them?
I've been playing about some more tonight and I have been trying the single LED dimmer example:http://www.arduino.cc/en/Tutorial/Dimmer
Again the lights don't light up. If I try sending data with the Serial monitor and ignore the processing part - the LED lights but no matter what value I send via serial monitor the Light remains at the same brightness.
Am I missing something completely here? I am completely new to the Arduino side of things - but all the coding seems to make sense - its just the serial doesn't seem to be behaving as it should.
Thanks for all your help - much appreciated.