Jeff,
I have found only one adjustment screw. It is the one I described that is located behind a rubber flap that is connected to the headlight assembly and goes over toward the plastic grille.
Raise the hood and pull the rubber flap forward. About half way down the assembly you will see the adjustment screw. This is the vertical adjustment screw on my 06.
I have not been able to located a horizontal adjustment. Based on the post above, I would say you can only adjust the vertical.
The post above seem very detailed.
Jerald