Do a search over on Avsim, they have Duxford scenery for FS2002, which also works in FS2004; well almost, as the static aircraft don't show up!  And there was a Duxford add-on here on SimV, to add the static F-15 outside the American hangar.  I've loaded it on, but yet to see it!!

http://www.simviation.com/fs2004scenery1.htm

Does anybody know which aircraft are in the static lineup these days, as I want to attempt to add them to my setup?