USING GOOGLE EARTH
Download and unzip the Google Earth file.
To view the file in Google Earth, click File, Open and then navigate to where you saved the file and double-click it. The map points will be displayed using a custom icon.
This file will be placed in Temporary Places. If you want to save this so that it will load in My Places the next time you start Google Earth, click Yes when you are prompted to save when you exit Google Earth.
Note that you can have many overlays saved in you’re My Places folder. You can turn them on and off, individually. Neat!