Rick,
check out where the noise is coming from. It could actually be in the vent
inside the door. Play with the vent in the door (while you are driving) and
hear if the noise changes. The vent actually sucks air from the area of the
bottom of your seat (very convenient if you eat lots of beans) and releases
it at the front of the door where the air creates a vacuum when you are
driving. Some models also have attachments to bring air to the back from the
front air intake. 

Next check would be the window gaskets.

good luck,

Bj�rn

Bj�rn Ratjen

Mill Bay, B.C. 

1987 Syncro Est Alia (self camperized)
1995 Passat TD
(1982 Vanagon Diesel)
1979 VW Bus (self- camperized)