Check out this utility for Windows Vista that has been on the MAC.

Expose is an application on Mac OSX that tiles all the open windows with the press of a key, letting you quickly choose between them. Now there is finally a Mac OSX Expose clone application for Windows Vista that runs great! Not only that, but it’s open source, so you can improve it if you wanted to.

To install this application, you’ll have to run the setup application as well as the Visual C++ redistributable package, unless you have visual studio installed, which you probably don’t.