Problem in Deserializing data which has <xsi:type> in xml thru XSLT

[Umagowder]

All
I have my class serialised correctly.
I have to apply style sheet to that data and display it in some other format.
Everything works fine,I can not read the following xml tag,

  <PrescriptionRefillMeds>
    <anyType xsi:type="PrescriptionRefillMed">
      <Description>Drug1</Description>

I have written code to conert the object in to the serialising/deserialising in C#.
XSLT has the required namespacses also,not able to read the PrescriptionRefillMed class,where as PrescriptionRefillMeds is an IList.

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsl:output method="xml"  omit-xml-declaration="yes" indent="yes"/>
<DRUG>
<PrescriptionRefillMeds>
          <PrescriptionRefillMed>
            <Description>
              <xsl:value-of select="DescriptionId"/>
            </Description>
</PrescriptionRefillMed>
</PrescriptionRefillMeds>
</DRUG>
</xsl:stylesheet>

I have read one article,some one called Chris also had the same problem and he himself foundout the solution and the solution is passing the parameter to Serializer constructor?
Does antbody know whats this parameter? and any other ideas?

Final thing is how to read the <anyType xsi:type="test">
from XSLT ???

Very urgent,appreciate your help.
Uma.