<?xml version="1.0" encoding="utf-8"?>
<?taxonomy-version 1.3.0?>
<!-- Copyright (C) 2007 CEBS Secretariat Ltd., Tower 42, 25 Old Broad Street, London, EC2N 1HQ, United Kingdom. -->
<schema 
	xmlns="http://www.w3.org/2001/XMLSchema" 
	xmlns:xbrldt="http://xbrl.org/2005/xbrldt" 
	xmlns:xbrli="http://www.xbrl.org/2003/instance" 
	xmlns:link="http://www.xbrl.org/2003/linkbase" 
	xmlns:xlink="http://www.w3.org/1999/xlink" 
	xmlns:d-hh="http://www.c-ebs.org/eu/fr/esrs/finrep/d-hh/2008-01-01" 
	targetNamespace="http://www.c-ebs.org/eu/fr/esrs/finrep/d-hh/2008-01-01" 
	elementFormDefault="qualified" 
	attributeFormDefault="unqualified">
  <annotation>
    <appinfo>
      <link:roleType roleURI="http://www.c-ebs.org/eu/fr/esrs/finrep/2008-01-01/role/ADimensionalItems" id="ADimensionalItems">
        <link:definition>A-Dimensional Items</link:definition>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.c-ebs.org/eu/fr/esrs/finrep/2008-01-01/role/ProhibitedItems" id="ProhibitedItems">
        <link:definition>Prohibited Items</link:definition>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:type="simple" xlink:href="d-hh-2008-01-01-references.xml" xlink:role="http://www.xbrl.org/2003/role/referenceLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Reference Links, all" />
      <link:linkbaseRef xlink:type="simple" xlink:href="d-hh-2008-01-01-label.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Label Links, all" />
      <link:linkbaseRef xlink:type="simple" xlink:href="d-hh-2008-01-01-definition.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Definition Links, all" />
    </appinfo>
  </annotation>
  <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <import namespace="http://www.xbrl.org/2004/ref" schemaLocation="http://www.xbrl.org/2004/ref-2004-08-10.xsd" />
  <element id="d-hh_AdimensionalItemsPlaceholder" name="AdimensionalItemsPlaceholder" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" abstract="true" nillable="true" />
  <element id="d-hh_EmptyHypercube" name="EmptyHypercube" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="instant" abstract="true" nillable="true" />
  <element id="d-hh_NullDimension" name="NullDimension" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" xbrli:periodType="instant" abstract="true" nillable="true" />
  <element id="d-hh_ProhibitedItemsPlaceholder" name="ProhibitedItemsPlaceholder" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" abstract="true" nillable="true" />
  <element id="d-hh_ProhibitingHypercube" name="ProhibitingHypercube" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="instant" abstract="true" nillable="true" />
</schema>