I cannot generate a proxy class to call the CSS validation web service given the provided wsdl file (http://www.w3.org/2005/09/css-validator.wsdl) in the web documentation.

The following error was generated:
Error: There was an error processing 'http://www.w3.org/2005/09/css-validator.wsdl'.
- The document at the url http://www.w3.org/2005/09/css-validator.wsdl was not recognized as a known document type.
The error message from each known type may help you fix the problem:
-Report from 'WSDL Document' is 'There is an error in XML document (2, 2).'.
-<description xmlns='http://www.w3.org/2006/01/wsdl'> was not expected.
-Report from 'DISCO Document' is 'Discovery document at the URL http://www.w3.org/2005/09/css-validator.wsdl could not be found.'.
-The document format is not recognized (the content type is 'application/wsdl+xml').
-Report from 'XML Schema' is 'Expected Schema root. Make sure that the root element is <schema> and the namespace is 'http://www.w3.org/2001/XMLSchema' for an XSD schema or 'urn:schemas-microsoft-com:xml-data' for an XDR schema. An error occurred at , (2, 2).'.

More information:
-OS: Windows XP SP2
-LANGUAGE: C#.NET
-DEV ENV: tried MS VS.NET 2003 & MS VS.NET 2005 (by adding web service reference & by using the wsdl.exe command-line utility provided by both versions of VS.NET)
-BROWSER: attempted download in Firefox, IE & Safari for PC. 
-Attempted to generate the proxy from two different locations (same error message):
1) from the URL at w3c
2) from the local URL after downloading from w3c

Please let me know if I am missing something or if the WSDL is malformed. Perhaps the VS.NET 2003 & 2005 wsdl tool does not support WSDL 2.0? I couldn't find any conclusive documentation on this (http://msdn2.microsoft.com/en-us/library/7h3ystb6(vs.71).aspx), but if it is the case, do you have a WSDL 1.1 spec for creating a proxy class to call this web service?

Thank you.