Declaring an xml document ?

Hi list,
I am having problems declaring an xml document.
When I put this at the beginning of a file:

<?xml version="1.0" encoding="UTF-8"?>
<osis xmlns="http://www.bibletechnologies.net/2003/OSIS/namespace"
       xmlns:xs="http://www.w3.org/2001/XMLSchema-instance" 
xs:schemaLocation="http://www.bibletechnologies.net/2003/OSIS/namespace 
osisCore.2.0.1.xsd">
</osis>

...then upon validation (Schema -> validate document) Pollo says: 
unexpected attribute xmlns.

Anyone knows why?
Thanks for any answers.

Benedict


And this here is what's at the top of the schema file (osisCore.2.0.1.xsd):
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema 
targetNamespace="http://www.bibletechnologies.net/2003/OSIS/namespace" 
xmlns="http://www.bibletechnologies.net/2003/OSIS/namespace" 
xmlns:xs="http://www.w3.org/2001/XMLSchema" 
elementFormDefault="qualified" attributeFormDefault="unqualified" 
xml:lang="en">
         <xs:import namespace="http://www.w3.org/XML/1998/namespace" 
schemaLocation="http://www.w3.org/2001/xml.xsd"/>
         <xs:annotation>





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