You can add loads of objects from the FS2004 object bank using Rollerballs User friendly design package which may help some to understand what this XML code stuff is about

Hiya Bird
Thanks for the mention but things have come on some since.
Forget AFCAD2.
YES forget AFCAD. It now has major limitations. I'm sorry Lee, but Tom Hiscox has now done it while we've been waiting.
Use SceneGenX by Tom of Airport fame. It does the lot with a user-friendly GUI interface, FSUIPC connection, the works.
You can do all the same stuff as AFCAD (OK, it's a bit more tricky to do things like taxiways, but stuff like navaids is a snip) but you can also add objects from the default FS9 library including objects that previously were inaccessible (like area delimited ones - he includes loads of buildings from DFW for example). Plus it will let you add objects from libraries that people will be creating in the future.
I used it as an experiment to create my Brentwood STOLport and only used AFCAD as an additional tool to confirm my position references.
At the moment you have to use Airport (but with the same background bmp on the same scale as SceneGenX) to set your excludes and flattens but pretty soon Tom will have those in SceneGenX as well.
So there you have it. Now can you see why I've been telling everyone to forget about FSSC and use Airport. It's THE design tool of the moment. There's nothing else like it right now.
I dunno - should keep my mouth shut. Now EVERYONE will be out there making incredible sceneries.
Roger