Not too hard to do mate, If you put your steering onto full lock so you can get to the inner wheel arch liner, remove the 2 black plastic plugs that hold the liner to the car and pull the liner back, you will be able to see the back of the fog light its a bit awkward but unplug the lead and twist the bulb out? Just hope the bulbs havnt corroded into the lamp like most do and can be a right pain to get out without removing the whole light unit
Or you can get the lamps out from the front if you have the standard bumper fitted using a 10mm ratchet spanner by un doing the 2 bolts at the side of each lamp?