Click Start... (All) Programs... Google Earth then click Start Google Earth in DirectX mode. If it still freezes, try choosing Start Google Earth in OpenGL mode instead. If one of them works, the program will remember and you can go back to using the shortcut on your desktop.
If neither work, a good first step would be to update your graphics card driver. If it still doesn't work, uninstall then reinstall the software. If it still doesn't work then, you may not be able to get the software working on your computer, but post back with the info fo3nix was looking for and we'll see what we can do.