Nikon D300 pop-up flash tube broken :(

Hey guys, I took out my camera to take a few photos at a family BBQ and happened to drop my D300 20cm off the floor when the strap got caught... it landed on its top and when I noticed my remote flash wasn't responding I noticed the pop-up flash on the D300 had a piece broken within it... 
Does anyone know what options I have here in Adelaide to get it repaired or have a replacement bulb that I can install myself? The only use I have of the built-in flash is to act as a trigger for off-camera flashes.
Thanks!

Does anyone know what options I have here in Adelaide to get it repaired or have a replacement bulb that I can install myself? The only use I have of the built-in flash is to act as a trigger for off-camera flashes.
Thanks!