How do I create KML files?
There are three main tools for creating KML files.
Google Earth. This is the most important tool that you can use to create KML files. Using Google Earth, you can create
Placemarks
Paths
Polygons
Image Overlays
Network Links
Place models
Folders of all of the above
PhotoOverlays
Once you have created one of these objects, right click on it in the "Places" pane, and select "Copy". You can then paste into a text editor or an XML editor and begin editing it.
Text editor. After creating an object in Google Earth, paste it into a text editor, and begin editing it.
XML editor. KML is an XML language for describing geographic content. An XML editor is a fancy text editor which gives lots of tools for creating XML documents, such as tag completion, which makes sure that you close your KML elements with the proper close tags.
There are also many tools created by users in the Google Earth community. Check out the KML Developer Support Google Group.
Questo messaggio è inequivocabile, per fare un buon lavoro bisogna usare una di queste 3 vie, considerato che come giustamente Agh dice, lavorare su Google Earth è macchinoso, io andrei di xml o txt editor, che su linux è molto comodo in quanto si può scriptare!!!