I enjoy "building" local airports in my area. I've been doing this for years, using EZ scenery in fs9 and now Instant Scenery 2 in FSX. One thing that I've wondered about when using both programs is where are the files located that determine the textures of the runways, aprons, etc. As an example, I have a choice between three grass textures and they are almost identical. Concrete is great, but dirt and sand are not so great. Can these textures be changed or modified? At least can someone point me to where they are??

Hope that made a little sense.

Thanks

Barry

You could try the main Texture folder and look for the one's that say Runway?

 

They can be changed, but any change is done to airports worldwide that use those textuers.