there are 2 retaing clips that hold each headlight in. There are 2 clips between the battery and the passanger side headlight. and two on the driverside in front of the air cleaner. they are on the wall the braces the radiator. just pull the clips up out and then wiggle the headlights and they will come off. Just make sure when reinstalling that you get the tabs on the headlights to go back into their slots. good luck
you dont have to unscrew anything, just pull straight up on the retainers, and like xtremefour said, make sure you put the tabs back into the slots, if not your headlights will be bouncing around and the aligment will be off...
i think one of my headlights is higher then the other currently. i know this because when i see the reflection on other peoples cars one looks brighter then the other.