AFCAD2 for Fs2004 DOES allow you to change the texture type for Taxiways and runways. (ie Concrete, Ashphalt, Macadam, Tarmac, Gravel, Water etc). You can also change the widths and SOME of the markings, navaids and lighting on runways, also edge and center line markings on taxiways and apron routes. Future versions may also allow apron textures to be changed. Buildings and building parts (like jetways) should be available to add and move in the upcoming versions of AFCAD2. Also is DOES work on 3rd party, the textured taxiway/runway textures simply do not appear SOMETIMES, and sometimes the "progressive taxi line" doesnt show, it DOES however place routes just like AFCAD in FS2002.
For Fs2002, you can purchase Flight Simulator Scenery Editor from Lago Online to add buildings, jetways, vehicles, scenery, "people" and things along those lines from a pre-defined set.
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