http://donxml.com/allthingstechie/archive/2005/06/15/1995.aspxValidating a XmlDocument using a schema in .Net 1.1 is not as easy as it should be (but it is fixed in System.Xml 2.0). XmlDocuments are really meant for updating Xml using the Document Object Model, but for some reason WSE and ASMX likes to return XmlDocuments,enCommunityServer 2.1 (Build: 60809.935)