-but will using DXT3 textures in the Scenery/world folder instead of bmp textures give reflections off trees etc?

There is no such thing as a stupid question, although I've seen a lot of stupid answers!DXT3 is a format in which BMP files can be saved, enabling the inclusion of "alpha" channels which provide reflections. The quick answer to your question is no; but wherever an aircraft or scenery painter has enabled reflections, you will see them if you have reflections enabled in your FS2002/OPTIONS menu.Mark "Dark Moment" Beaumonthttp://www.swiremariners.com/cxkaitak.htmlhttp://www.swiremariners.com/reds.htmlhttp://www.swiremariners.com/cxkaitakv3.jpg