You have to open the hood and locate the 4 'hex-type' screws on top of the grill, remove those. In the grill there are 4 more, remove them as well. Once they are all removed, GENTLY pull the grill towards you, there are 2 snap-type thingys on each side ( you may or may not have them, depending upon how many times the grill was removed before). Pull the grill forward enough to expose the lights that you have to change....change and repeat the steps backwards to put it back...
Hope that helps.....