This 3-D image comes from the June 1999 issue of Sky & Telescope, and is based on the Hipparcos distance to each of the stars.
To see the 3-D view from the computer screen, first scroll the page or move your head so that your eyes are level with the images. Stare at the middle of the space between the two images. Relax your eyes and gaze into the distance through the screen. The two images will seem to split and form an additional image in the middle. If you get the split images to line up exactly on top of each other, they will fuse into one center frame, revealing the 3-D effect.
It is not recommended that you do this for any extended period of time.