Well, for pretty much the entire time that I've used Windows 7, which has only been for a couple months, I had always had it set so that when I hovered over an item in my taskbar, it would show the titles of open windows and that was it. Now just today, I looked online for a few themes and when I downloaded them and changed to them, it now showed a preview of that window I hovered over and I have been unable to find a way to change this back without changing back to my original theme. Any help would be greatly appreciated.