What library to import for Geocoding with Bing Maps in VB?

I'm trying to implement the demo Reverse Geocoding here: in VB http://msdn.microsoft.com/en-us/library/cc966828.aspx

What library can I开发者_StackOverflow社区 import, or "add a reference to in VB" so I don't get the following errors:

Type 'GeocodeService.Credentials' is not defined.

Type 'GeocodeService.Location' is not defined.

Type 'GeocodeService.GeocodeServiceClient' is not defined.

If you look up the table of contents on the left hand side of the page, you'll see that page is a subtopic of the Bing Maps SOAP Services. Click on that link to get a list of lots of articles about the service, including a link to SOAP Service Addresses at http://msdn.microsoft.com/en-us/library/cc966738.aspx, which will give you the endpoints for all the services.

For this example, GeocodeService should be a reference to

http://dev.virtualearth.net/webservices/v1/geocodeservice/geocodeservice.svc