TomTOM,
I understand your frustration. I've never been able to see stereograms. Still can't. It drives me to distraction. When the course materials arrived, I spent close to an hour trying to see the image. I handed it to my husband who never has a problem with such things. He promptly told me what was there.
Funny the blip page was so easy for me. Looking over and beyond the page worked right away. Wish I could offer some advice. My issue is activation. I'm still trying to retrieve the material. It's like a pair of key: I know its here, I've just got to find it.
All the best,
Orelindel