Open the boot and inside the car you will find 2 circular plugs behind the lights (about the size of 10p pieces) that you need to prise out. There is then a tool in your tool kit (on the spare wheel) to remove the 2 bolts holding your light assemblies in. You have to remove the whole cluster units to get at your bulbs. Sounds tedious I know - but it's not that bad really!
Hope this helps!
Damnstudents, January 2005