I have a periodic problem where at times when I am typing, all of the sudden a window pops up that shows all open windows in a rectangular window. I am attaching a jpg of the window. If anyone can tell me if this is something I can disable in Windows 7 or if it is a part of another program and you can tell me what program it is, I would greatly appreciate it. Thanks in andvance.

heavy

Is maybe part of GMail - (see Settings->Gmail Labs->Message Sneak Peek)

This is the 'Task Switcher', from what I can tell. It shows up when you press Alt + Tab (I haven't exactly figured out how to make it stay though). It's part of the OS and from the searching I did, you can disable it, but it requires editing the registry.