As I've said many times before, get the service manual :P
But to take the parkers out, first pop the bonnet. Then undo the single screw bolting the parker cluster to the headlight cluster (it'll be a Phillips-head screw on top of the headlight). Then, wiggle the parker towards the front of the car (it has some spring-clip thingies holding it in too) until it pops free. Then turn the globe holder anti-clockwise and pull out the holder, thus giving you access to the globe itself. I'm sure you can work out what to do from there on.
thanks dude ..ive give it a go