In Windows 7, hold down the windows key and hit one of the arrow keys to manipulate the current window. Hit the windows key  plus: up-arrow to maximize the current window, down-arrow to minimize current window, left-arrow to left-align the current window, and right-arrow to right-align the current window. When one window is left-aligned and another window is right-aligned, you can easily browse both windows as if you had dual computer screens!