Regarding XCatalog loading using Xerces2.7.0

Hi all

       I am upgrading my application from Xerces 1.4.4 to Xerces 2.7. 0. As 
part of that I am using XML Commons for Catalog reslovers  (because Xerces 
2.7.0 is not providing API to load the XML Catalog). Previously my 
application support XCatalogs (by using "org.apache.
xerces.readers.XCatalog" loading the catalogs) and I want to make
the upgrading application also supports XCatalogs.

The XCatalog file looks like

<XCatalog Version = "1.0">
        <Remap SystemID = http://www.bbc.co. 
uk1/syndication/feeds/news/rss-0.91.dtd HRef = "file:/E: 
/Repackage/rss-0.91.dtd" />
</XCatalog>

I am trying to load the above file by using XML Commons and unable  to load. 
But I wrote the equal "oasis" catalog file and able to load it.

The XCatalog file looks like
<?xml version="1.0" encoding="UTF-8"?>
<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
      <system 
systemId=http://www.bbc.co.uk1/syndication/feeds/news/rss-0.91.dtd 
uri="./rss-0.91.dtd"/>
</catalog>

Is there any way to load the XCatalogs using XML Commons?

Thanks,
chvsr