I have been working on a new project recently that will involve some custom mapping. In my discovery phase I ran across a nifty project called mygmaps (www.mygmaps.com), it is a project to allow for custom google maps. This project which is relayed as a Standalone Mode for google maps, will let the end user populate the map with bullet points. Here is my custom map (http://mygmaps.com/show/0.0.5/?url=http://mygmaps.com/account/jimiz/Jim.xml)
Notice that the popup window (or box) has custom info in there “Jim Becher”. You can read more about how this works and what it is on the developers site. There is even an unofficial Google Map api out there.
Have fun gmapping…..