On my car (a '97), there are 2 lights and between those are 2 recessed screws, Phillips I think. I assume that would allow that entire strip to come off, then you replace the bulbs from inside there.
This is the diagram at realoem.com for my car. Just to be safe, put in the serial number for your car. Or you can just remove the bulbs and take them with you to your local auto parts store.