XML:lang, clarification demanded

["Kris Vanhoutte" <kris.vanhoutte@ctparadigm.be>]

Hi there,

I created an xml-document and the validating Xschema.  After processing the xml-document, a xhtml-report was created and placed on the intranet. The application has to be executable local too however, and that is were my problem is situated.  

The xml-document uses xml:lang and for some reason, the validation against the Xschema doesn't work when there is no internet-connection.  I checked the w3c recommandation, but they don't mention any problems of this kind.  The code I use in my Xschema to define the xml-namespace is the following:
<xs:import namespace="http://www.w3.org/XML/1998/namespace"; schemaLocation="http://www.w3.org/2001/03/xml.xsd"/>
In my opion, it is the xs:import that causes the problem, but I don't know how I can solve it.

Is there anyone that can help me with this problem, or that has experienced this problem too?

last remark: I use the msxml4.0 engine (it is not possible to use another one)

Thanks

Kris