This is the BEST way to view these stereo photos. You must gently cross your eyes - relax, and slowly let the two images merge in the center. Voila! If you are having trouble: hold your thumb about a foot in front of your eyes, with the monitor a foot or two beyond your thumb. Focus on your thumb, then slowly let your gaze transfer to the images beyond. Relax and let the two images merge into one, and there you have it.
NOTE: set photo viewing size for LARGE, or use SLIDESHOW mode.