My a/c belt was screeching when I kicked it on. I went to check the belt tension and found that the whole bracket that holds the compressor and the airpump is loose. I can see two holes that go thru the bracket to the block, just above the compressor but the bolts are missing... Anyone know, or have a reference of the type of bolt, length/size/thread these should be? Thanks.

Look here for a listing of what you need

http://www.realoem.com/bmw/

Found it, Thanks Bob! Now gettin em in is a whole new ballgame...