You can try gpstracer :
http://david.hautbois.free.fr/joomla...fileinfo&id=23

It records waypoints and generate a KML file for Google maps :
http://maps.google.com/maps?f=q&hl=e...2FLes_ulis.kml

Documentation, actually only in french :
http://david.hautbois.free.fr/joomla...ask=view&id=98

I'm writing a php script to display the uploaded kml files in a rss feed :
http://david.hautbois.free.fr/temp/kml_rss.php

I know there are somes bugs : this is my first application with C programming language.

David.