OpenSMIL is SharePoint Map Integration Layer - OpenSMIL provides a Map Web Part, a custom data field, a mobile client and exports geometries to KML.
SMIL is an open source project with the aim to geo-enable SharePoint.
Deploy the wsp's and add BingKey to your web.config like
<appSettings>
<add key="BingKey" value="{your-bing-map-key}" />
</appSettings>