How to link SharePoint list to a map? (Link a map to a SharePoint list)

I want to link a SharePoint list to a map to color code regions, based on criteria from开发者_C百科 the list. Can someone help, or suggest an easy to build solution?

Thanks,

I would look at either custom development as suggest above, or look at contributing/re-using the following codeplex project http://googlemapswebpart.codeplex.com/