Hello - I have worked thru the given examples.  I am able to call out and get a response from the web service, but the apex generated class is unable to dechiper it.  I am receiving this error:

System.CalloutException: Web service callout failed: Unable to parse callout response. Apex type not found for element Response

The wsdl as generated from the .NET asmx  ?wsdl contained an s:any which according to another thread is unacceptable to Force, so I tried to rework it  without success. 

The response I am getting from the webservice is:

<?xml version="1.0" encoding="utf-8"?>
<Response>
  <Status code="500" text="Error" />
  <Details>
    <Message type="E" text="This order does not exist ." />
    <Message type="E" text="The selected candidate record does not exist." />
  </Details>
</Response>

I would like to get the message text from the lines where message type = "E"  (error) and display it in a text field on the calling form. 

So how can I determine what the wsdl needs to look like for Force to digest the response properly?