To change the resolution of your computer if it is set at something other than 1024X768 (Most people use a setting of 800X600). 1. Right click anywhere on your desktop. 2. Click 'Properties' on the drop down menu. A new window appears. 3. In the new window select 'Settigs'. 4. Under the heading 'Screen Resolution' with your mouse, move the slider one notch to the right. It should indicate a reolution of 1024X768. 5. Click 'OK' and then, Open or go back to Google Earth.
To reset your computer to its former resolution follow the above instructions and use the slider to reset it to you preferred resolution.