It is happening on all models and I did check the layer thing. I thought that might be the problem too, but I went thru and double checked it.
The only thing I can think of now is that my video card cannot support the Open GL, b/c if I switch to internal, it shows shading, it's choppy, but shaded.
Thanks for your feedback, if you think of anything else, let me know, but I'm going to see about upgrading my video card and hopefully that will fix it.
Thanks, Leslie