manually adjust headlights

How do I manually adjust headlights? I have the auto leveling sensor, however, it is broken and my dealership won't replace it. My car always passes the headlight portion of inspection with flying colors but when I drive, it is noticeably lower than they should be. They probably aim abut 10 feet in front of the car. It sucks driving at night as I cannot see past that and routinely run into potholes. I'm getting frustrated with them and just want to do it myself. Any help would be great. Thanks!

 

Anybody? Its getting increasingly dangerous to drive at night when there are no lights on the road.

 

Thanks for the photo. I did infact take a part the sensor a little while ago, the only problem was that not only was the spring rusted out, but the other part of the sensor (the gray plastic dog bone piece) was completely missing.

Where exactly is this adjusting star?
Do I have to remove the clear plastic covering over the headlights to get to it?

 

Thanks jayman,

I was FIIIIIIINALLY able to find both gears and adjust the headlights. Its tough though since there isn't really anything to really set them equal like say, 20 spins from some initial point. What I did was throw a cover over one headlight, shined them onto my garage from about 15 feet away at about 3.5 feet high, mark it off with some tape, then cover that one and go adjust the other one until they both matched the same tape mark. I can't tell if I adjusted them "optimally", but it makes driving at night a world of difference.

 

Yeah I went for a test run in a densely populated area as well as this really dark road by the river and no problems so far. Is there a certain height the lights should be that gives best lighting? I think mine might be a bit high but can't really tell since they've been screwed up for so long.