asp form post and xml response

hi friends
im doing an xm hotel reservation b2c projects where im supposed to
send xml request to the main server and get response in return.
here is a the sample request

<form action="http://www.servername.com/xml_req_parser.php" method="post">
<textarea name="xml" cols="90" rows="20">
<?xml version="1.0" encoding="UTF-8" ?>
<XMLRequest>
<RequestType>DestinationListRequest</RequestType>
<RequestLogin>
<AffiliateCode>AF0001</AffiliateCode>
<AffiliateUsername>myUserName</AffiliateUsername>
<AffiliatePassword>myPassword</AffiliatePassword>
<AffRequestId>5</AffRequestId>
<AffRequestTime><%=now()%></AffRequestTime>
</RequestLogin>
<DestinationListInfo>
<CompleteList>false</CompleteList>
</DestinationListInfo>
</XMLRequest>
</textarea><br>
<input type="submit">
</form>

in return i get the response from http://www.servername.com/xml_req_parser.php
which is the form target.

<?xml version="1.0" encoding="UTF-8" ?>
<XMLResponse>
<ResponseType>HotelListResponse</ResponseType>
<RequestInfo>
<AffiliateCode>AF001</AffiliateCode>
<AffRequestId>5</AffRequestId>
<AffRequestTime>2010-09-30T14:43:24</AffRequestTime>
</RequestInfo>
<TotalNumber>51397</TotalNumber>
<Hotels>
<Hotel>
<HotelCode>ABCDE</HotelCode>
<DestinationId>NFUE</DestinationId>
<Destination>Nice</Destination>
<Country>France</Country>
<HotelName>One Spa Hotel</HotelName>
<StarRating>4</StarRating>
</Hotel>
<Hotel>
<--record 2 here-->
</Hotel>
<Hotel>
<--record 51397 here-->
</Hotel>
</Hotels>
</XMLResponse>

as the response is only after submiting a form how can i load the xml
into my asp program so that i can display the result in web page.
kindly help

neon

i used ServerXMLHTTP that failed to load the xml, showing

XML load failed: XML document must have a top level element.

the xml actually having top level element in the response xml that i could see. i assume
it is not get loaded here.

below is the code i wrote

Code:

---

<%
req=request.Form("xml") '// i changed the form ACTION to this page

Set httpObj = Server.CreateObject("msxml2.ServerXMLHTTP")
httpObj.Open "POST", "serverurl/xml_req_parser.php", False
httpObj.Send req



Set xmlObj = Server.CreateObject("Microsoft.XMLDOM")
'//xmlObj.Load httpObj.ResponseXML
xmlObj.Load httpObj.ResponseXML.xml


if xmlObj.parseError.reason <> "" then
  Response.Write "XML load failed: " & xmlObj.parseError.reason & "<br>"
  response.end
else
    response.Write "load success"
end if

set rootObj=xmlObj.getElementsByTagName("Rooms")

response.Write rootObj.length
%>

---