access response from .NET webservice in callback function on HTML page

Answer 1

This HTML page will be hosted on a different server.

Impossible. Javascript can't access content from a different domain. You may get it to work on localhost, but upon deployment it will fail.

Answer 2

In order to consume an XML webservice, both will need to be on the same domain and port or you will need to create a proxy. Try looking into JSON which will allow you to use javascript to access the webservice.

Answer 3

Thanks a lot Josh and Russ.