xml-dev - XML Schema!!

[vishal sharan <mettlus@yahoo.com>]

Hello Everyone! I need help of the Gurus to correct with the schema I
have attempted to write in XML.
The schema is
-------------------------
<?xml version="1.0" ?> 
<Schema name="schema-sample_1" xmlns="urn:schema-skup-com:xml-data"
xmlns:dt="urn:schema-skup-com:datatypes" model="open">
 <ElementType name="DSC" content="mixed">
  <AttributeType name="T" dt:type="LST" /> 
  <AttributeType name="N" dt:type="text" /> 
  <AttributeType name="R" dt:type="enumeration" /> 
  </ElementType>
 <ElementType name="DFM" content="mixed">
  <ElementType name="LST" content="mixed" /> 
  <AttributeType name="N" dt:type="text" /> 
  <AttributeType name="I" dt:type="int" /> 
 <group order="seq">
  <element type="L1" /> 
  </group>
  </ElementType>
 <ElementType name="HDR" content="mixed">
  <element type="DSC" minOccurs="1" maxOccurs="*" /> 
  <element type="DFM" minOccurs="1" maxOccurs="1" /> 
  </ElementType>
  </Schema>
---------------------------
The XML Doc composed on that basis is
=========================================
<?xml version="1.0"?>
<HDR>
<DSC T="LST" N="bla bla bla" R="t">
<DFM/>
</DSC>
</HDR>
<LST N="bla bla bla">
<L1>googoo</L1>
<L2>abracadabra</L2>
<L3>open sesame</L3>
<L4>baboom</L4>
<L6>break on through to the other side</L6>
</LST>
</DSC>
===============================================
Please help

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