I've just tried to open some files to start adding trees and all I get is a black square when I try to load the bmp into annotator.The scenery works in FS, so what would I have done to my bmp's to make them so that annotator doesn't see them?

Are you sure you are not just viewing tiles that have been masked for water? Water masks show up as black.

Cover me in tar and feathers and call me a chicken.I hadn't thought of that :)I'll have another play tonight :)