If you can't figure that out, you probably should mess with it.
My HIDs were aimed way too high from the factory. I aimed them properly by finding a flat surface adjacent to a white wall. In my case, my driveway/garage door. Then you pull right up to the wall/door, within 2 feet, mark the cutoff on the wall with masking tape for each light, then backup 20 feet or so. When aimed correctly, there should be a 3 step pattern on the wall, from left to right going up. The upper cutoff of the left beam should land at the lower cutoff of the right. This center part/step should be about 1-2 inches below your tape. The far right should be at the tape or slightly above and the far left should be lower.
From the factory, mine were pointing upwards on both sides, blinding oncoming drivers.