For example. I have Aerosoft's Nice Cote de Azur addon and it includes the airport and photo real scenery of the area around the airport. But I also have VFR France for that area as well and wanted to use that for the photo scenery instead of the one that comes with Aerosoft's. Is it possible to have the photo scenery from VFR France and have Aerosoft's airport laid on top of it?

Shouldn't be a problem...just put the Aerosoft one above the VFR France one in the scenery list. 

 

EDIT:  I do recall seeing some posts that said that the scenery with the highest resolution would be the one you'd see.  Not sure how you'd figure that out unless you'd try it.

Depends on the Nice Cote De Azur scenery. You would have to look into the scenery folder for the Nice Cote De Azur scenery and look for any large .bgl files (ie larger than 10MB). Very large .bgl scenery files are usually photoreal files (all the textures and data is compressed into a single .bgl file). If you are lucky there will be one .bgl for the surrounding area and another separate on for the airport. If you are unlucky then there will be only one file containing all the photoreal in which case you can't separate them.

 

There will usually be two files if the resolution is different (ie the pixels per cm). Airport scenery will usually be at a higher resolution while surrounding areas will be at a lower resolution. If you are lucky and do have two separate .bgl files then all you would need to do would be to remove the one that covers the surrounding area from the scenery folder and put it into a safe location (out of your FSX scenery folders)

Anthony, thanks for the detailed explanation. I will test it out and see if that will work.