I don't know if any of you are aware but there is some freeware scenery for Dusseldorf International Airport on AVSIM, which was designed for FS2000, but also works in FS2002...
It also works in FS2004 but there was not an AFCAD for it. - When I installed it, aircraft were parked inside the terminals... which isn't good!
I am currently in the finishing stages of doing an AFCAD for it to work in FS2004, with all the aircraft lined up perfectly at the gates and airlines assigned to the correct terminals etc.
If you wish to download the scenery from AVSIM, go to www.avsim.net and search in FS2002 scenery for:
As I say, I am almost done reworking the AFCAD so it will work, so if you wish to download the airport scenery, I shall have the AFCAD available hopefully by the morning, and I will let you know the filename for the AFCAD once it is released.