MultiWii

Hey,
I'm currently looking for a way to connect LEDs to my HK Multiwii 328P. I deleted the "//" signs in the LED Flasher part of the config, but I don't know how to connect the LEDs to the board. But appearently there is a way to get it working:
http://www.youtube.com/watch?v=mYIIX7f1-yQ
Does anybody know how to connect the LEDs to the board?

Thanks in advance,
David

according to this
//#define LED_FLASHER_PORT PORTB
//#define LED_FLASHER_BIT PORTB4
it is digital pin 12 on atmega328/uno board, or digital pin 10 on the atmega2560/mega board.