A challenge for the GPS geeksters. I have a KMZ file that contains around 5500 waypoints covering a large area that won't all fit onto the Montana, so would like to be able to cut out a group of waypoints covering a few hundred square kilometers, and just load those. I couldn't find an obvious way to do it in Google Earth, so wondering if there is another utility that will do it? I guess it needs to be something that will let me select a subset of the waypoints and extract them in a format that can then be loaded into Basecamp or Mapsource, and from there into the Montana. Cheers, JD BTW - if anyone wants to check out the file I am talking about, it's the first one in this thread.