I just did mine late Sunday night. I was in my office building late, and I'd been meaning to get this done since I saw the post. Super Easy job, thanks to this post. I was so proud, I just used the BMW screwdriver (Philips end) that comes with the tool kit in the back and the mini flashlight that comes in the glove box.
Just to clarify, since the pictures don't really show, the adjusting screw is a Philips head, and the BMW screwdriver fits perfectly. Anyways, I lined my car up do project directly at an opposite wall 30 ft away or so to guage how it came from factory and where I wanted it, and I did one full counter-clockwise turn at first, but ended up doing another for two full turns, and it was perfect.
It makes a huge difference, you just feel more confident driving at night when you can see further ahead clearly.