Tutorial for Using GeoVirginia
a) First, center the markers in the middle of the map by using the scroll button tool on the left-hand side of the map. This allows you to pan up, down, left or right.
b) After you have the markers in the center of the map, use the zoom tool on the left –hand side of the map to zoom in on the markers. This will separate the markers and allow you to view each individually.
a) http://earth.google.com/tour/
b)
http://www.zeesource.net/maps/help.do