How do you add airfields

I've got some relatives up in Wisconsin who have a grass airstrip on their farmland. (Two of my cousins are pilots and one is restoring a Stearman Biplane) What I'd like to do is recreate the strip, complete with the big corrurgated hanger and put it in FS2K2 so I can fly in and out of it. Is there software available that can help me do this?