When in the Wallpaper of the week section, use the tab button to highlight the squares that are around the only wallpaper in that section. To know which squares carry a hidden wallpaper, highlight the square and press the "up" arrow once. If the cursor highlights the inside border of the square and you hear a noise and see a flash in the "X", then that square carries a hidden wallpaper. I will make it easy. On the top row of wallpapers,If the wallpaper with the white backround and the alien facing the pred (final poster) is wallpaper is square 1, square 2 and 3 carry a hidden wallpaper. On the bottom row, squares 1,2 and 3 carry a hidden wall paper.