HOW TO - Replace fog light bulbs
Take the whole front off the fog by removing the two screws:
Note from Mooneggs (master of international OEM parts): Screws can some times be allen/hex key heads. I expect location of them would be the same though.
Give it a tug and it should come out as above. Try to keep a decent amount of pressure whilst unscrewing so they don't round off. They probably have never been opened before!
Then just remove the bulb as usual.