Argh the screen grab was wrong, I swear it was right when I copied it. I've corrected it now.
Thanks for your help, I do have the correct pins then, but I only have a resistor on the 5v pin.
I've seen this example used in a few places though so I'm surprised that it's apparently wrong enough to damage my Arduino? I'm also still a bit spooked to discover that the pins on the Micro can only supply half the current that the Arduino website says they can supply...