Ernie,

I don't know how to tell you how to look up a behavior you don't know the name for. I thought I remembered something about this being related to Aero, and Peeking at a window, so I Googled based on those terms.

Here's what you need:
[Link: howtogeek.com]

In general, I will say that most users fumble around in the OS, and often do things the hard way. I think some of the books on the tools we rely on often in our work are a great time investment. I tend to read them very quickly, not in a way of trying to remember everything, but rather to say what is possible, and glean what I think will be of value to me. Then, the side effect is that I tend to vaguely remember items like this, and I tend to pick the right words to Google, as somehow my brain remembers just enough to get me to the right place.

If you are interested in a very good Win7 book, I've always liked the "Missing Manual" series for this type of thing, and have read this book, and thought it quite good.

[Link: amazon.com]