Choose any file you are interested in and right click to download the linked file. The file will download with the original file name but with XML added at the end (dependent on you browser), as an example as 26-Sep-09-17_03.gpx.xml. Simply remove the .xml ending and you will have a file, which can be imported into Google Earth. As of December 7, 2009 the GPS files for the CH3 hash can be downloaded here: http://www.ch3.marimex.com/?page_id=29