Not sure whether AFCAD can yet create the type of visual scenery you're lookingf for, Michael. But any files you do create with AFCAD2 should just be saved into the Scenery sub-folder of the FS9 main folder called ADDON SCENERY.

It's already active and will 'work' without you having to do anything else. Drop or save the bgl file directly into that folder and then 'go there' or fly there or whatever.

If you want to reverse the process, just delete the relevant AFCAD bgl file from the Scenery folder mentioned above.

Good luck