The "Source URL" should be set to the following (which is the default): Code: http://www.gnuite.com/cgi-bin/gpx.cgi?saddr=%s&daddr=%s There need to be "%s" bits in the "URL" for it to work - those are the keys that Maemo Mapper replaces with your source and destination.
http://www.gnuite.com/cgi-bin/gpx.cgi?saddr=%s&daddr=%s