If you are unable to install Google Earth / access it from computers, a good alternative is
flashearth. This is a flash based map program, that does not feature many of the functions of Google Earth (e.g., rotation, pitch, 3D, etc) it does offer a good flat earth view. It utilizes Google Maps, Yahoo Maps, Ask.com, Microsoft VE, OpenLayers, and NASA Terra.
Hope it helps.
V/R,