Replace headlgiht bulb

Need some help, removing low beam headlight bulb from '03 Acura TL type s, driver's side. I looked under the hood and it seems complicated. I got as far as removing plastic covers, puling out an air filter (not air filter casing). But not sure where to go next. Also from the looks of the passenger side there may be a need of a special tool to unscrew the back of the headlamp. Would anyone be able to give me an idea of how to accomplish this task?

Thanks.:banghead:

If you are finding it difficult take to service centre. its an expensive car.