To take off the headlamp housing, the front bumper cover needs to be removed. It should be fairly simple when you remove the clips and screws. There's one on each side(inner fender), about 5 clips in the center(where the grill of the hood comes down to meet the bumer), and a few underneath. After that, the bumper cover just pops off. Then you'll see these bolts to remove the headlamps...I believe it's 4-5 for each lamp. It should pop out after that.. let me know....

-Eric Y.