Aharon, frames 12345 could then be 54321 but, you would have to make sure that the whole horizontal line is keyframed. I've just tried it and it does work. Wolf, I'm mapping an image strip from an avi of the Poser movie with Gif Construction Set onto a square, I know how many frames there are so I set the square (now a rectangle of course) at the first frame at the top, go to the last frame of the movie and move the rectangle up to the top. The movie is made from a camera placed directly opposite to the eventual one. The movie on the image strip then plays in a similar manner to a flip book. Replacing a window and setting the transparency correctly the movie apears to have the reflection mirrored in the window. Of course you have to find a way of hiding the unwanted parts of the image strip. The same method works for TV mirrors etc. The lights are much easier, just one up and one down with the area needed to glow set to a full reflection setting...