Adding reference to National Weather Service SOAP

I am running vb 2012 on a Windows 8 machine.  I am trying to add weather information from the National Weather Service (NWS).  I have followed steps to add the web service link found on the NWS web site.  I pasted the following link into the Add Web Reference dialog box:

http://graphical.weather.gov/xml/DWMLgen/wsdl/ndfdXML.wsdl

When I press the arrow on the right and either open or save the file I see a new window with the ndfdXML.wsdl file but I cannot add the reference to the project because both the Web reference name text box and the Add Reference button are grayed out.

Am I missing something simple?

RONATMOODYLAKE