Remember Bing Maps for WordPress plugin that uses Bing Maps AJAX Control. Here's another one using Bing Maps Silverlight Control. Once install and activate the plugin you can define a couple of default properties in the Settings. One mandatory property is the Bing Maps Key and if you don't have one yet you can create it at Bing Maps Portal. After you've entered your key you can start right away using the plugin.
When you create a new post you can either use special tags in the editor or use a wizard that can be launched through a new button in the editor. When you launch the wizard you can enter properties like culture, centre-point of the map and locations of pushpins and the tags will automatically be generated for you.
Download From: WordPress Plugin Directory