As a prelude to a new image overlay feature in Leveller, I've made a Win32 applet that does the same thing in a more general manner. If you download and run http://www.daylongraphics.com/download/usr/ImageWindow dot exe You'll get a simple window into which you can load uncompressed TGA images. Use the "File, Set Opacity..." command to change the window's transparency (minimum of 25%). Then you can position the window over Leveller (or any other program, for that matter) to check registration of visual elements. For example, if you are trying to arrange a Leveller scene that matches a photograph, you would load the photo into ImageWindow, position the window over Leveller's scene pane, and then get an idea of what camera adjustments or terrain modeling would be required. Ray