print SOAP::Lite
  ->uri("urn:vgx-horoscope")
  ->proxy("http://thor.velocigen.com:80/vx_engine/soap-trigger.pperl")
  ->getHoroscope(SOAP::Data->name("astrology" => 
                                  \SOAP::Data->name("sign" => 'aries')))
  ->result;

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope 
   xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" 
   SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" 
   xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" 
   xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance" 
   xmlns:xsd="http://www.w3.org/1999/XMLSchema">
   <SOAP-ENV:Body>
      <namesp1:getHoroscope xmlns:namesp1="urn:vgx-horoscope">
         <astrology>
	    <sign xsi:type="xsd:string">aries</sign>
	 </astrology>
      </namesp1:getHoroscope>
   </SOAP-ENV:Body>
</SOAP-ENV:Envelope>