CompuServe Messages

I did a map in 320×200. I then loaded it into a 1024×768 screen size. But when I try to do an Exapand X2, the marque box only covers one corner of the map image. I though that it should scale the entire image. What I am trying to do is rescale an image by importing it into a different size, expanding the image to fill the entire visual screen, then reloading it into 320×200 and using the pan function to scroll it. Will this approach work? Judy