UKHeliBob:
The example is a good place to start.The buttonPushCounter variable holds the number of button presses. You need a way to trigger the LED flashing such as another button input. When the start button is pressed you can call a function flash the LED. If the Arduino is not required to do anything else this will be easy. Are you familiar with for loops ?
Not, arduino not going to do anything else, i'm not a pro but i know about loops...can you give me a hand ? =D