GGeoXml
To read archives KLM or GeoRSS is now very simple with the GoogleMaps.Subgurim.NET.
All you have to do is use the class GGeoXml which contains a single property (url), then add an instance to the GMap.
The "url" property will be the place where the KLM or GeoRSS file is located.
Code.aspx
<cc1:GMap ID="GMap1" runat="server" />
Code.aspx.cs
GMap1.setCenter(new GLatLng(49.496675, -102.65625), 3);
GMap1.addGGeoXML(new GGeoXml("http://nigel.tao.googlepages.com/blackbirds.kml"));
GMap1.addGGeoXML(new GGeoXml("http://api.flickr.com/services/feeds/groups_pool.gne?id=322338@N20&format=rss_200&georss=1"));