This map web part utilizes both the SharePoint API and the Virtual Earth API and enables you to enter addresses into a SharePoint list and those addresses will be plotted within the map webpart. It comes with two views, the address view and the map view. By placing two map web parts on the page, you can list the address and show them plotted on the page if you configure them to both use oposing view. Good luck! and let me know if you have any feedback.