On the back of the headlight unit (seen from the engine bay) there is a clip on cover fitted. Carefully remove this cover and you will see the bulbs located in the unit. The driver side is fairly easy to change bulbs, but passenger side is a bit more difficult due to position of battery. The battery can be removed to make it easier but, if you take this option, don't forget the stereo will need the code re-inputting and dependant on how long battery is off, the ECU may need "re-educating".
VL1500 TONY, January 2010