I use McBear's model viewer not yaz0r's, because my graphics card is lame. See the forum thread on it.
I think most use printscreen and a graphics program to play with the images. Playing with the animations is not possible. Unless you are a genius like yaz0r , McBear or Nexxus who has done some pretty cool things.
You can change the background, zoom in and out, rotate, pan the camera, add or delete lighting or shadows, view vertices and bones and more on McBear's. Pretty neat!
Did you guys see my tutorial there ?