You should just be able to pop open the back of the low beam on the inside of the whole headlight....please don't take it to a mechanic for this...
<img src='http://www.bmw-forums.com/forum/uploads/post-46-1094081870.jpg' border='0' alt='user posted image' />
Clear Corners and Sidemarkers
ZKW Euro Ellipsoids w/ DDE Enhanced
Debaffled Airbox w/Green Drop-In High Performance Air Filter