erm.. if the fuse is missing, then put one in there.
no, all e36 fuses are in the same place.
first, find out what else is running on the low beam fuse circuit.. are those things working? if so, then your fuse is definiately fine. next, check your bulb. are you sure you didn't get a dead bulb, or that it's not installed securely? if the bulb is fine, then check to see if the wires plugging into your headlights are providing electricity.