I just want to say a huge thank you to Nikhil for providing an answer to this. I think that the developers of Windows should make this an easy to configure option in future versions of Windows.
I am glad to see that I am not the only person who hates having popup things of any kind when they are trying to work. I, personally, cannot see any use at all for the preview windows - they are simply eye candy that reduces productivity as far as I'm concerned.
I couldn't last 5 minutes with them on so I turned them off. I was, however, left with the (still) annoying text list which always popped up, instead of the thumbnail preview.
Windows XP had it exactly right - you should get a text list if, AND ONLY IF, you click on the little arrow on the taskbar's button. Sadly, I don't think that is possible at all in Windows 7.
Speaking of Windows XP, I never appreciated just how great that OS was until I used Windows 7. Windows 7 is a big step backwards in many respects. I know I worked faster and happier with Windows XP.
Speaking of "you should get a text list", this is what I am getting, rather than the thumbnails. How do you switch from thumbnails to the text list or from the text list to thumbnails? I have two computers, one with a text list and one with thumbnails. I
want them to be the same. Thanks.