web service & soap

mam en cist banalen primer web servica z eno funkcijo.K ta service zalaufam na serverju mi lepo napise kako service uporablat, zdej service znam uporablat prek aspx webforme zanima pa me kako uporabs service se z soap request pa responsom, tale koda k mi jo web service sam zgenerira mi ni cist jasna kva morm z njo nardit :

POST /service1.asmx HTTP/1.1
Host: sword
Content-Type: text/xml; charset=utf-8
Content-Length: length
SOAPAction: "http://tempuri.org/add"

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instan... xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelop...
<soap:Body>
<add xmlns="http://tempuri.org/"&gt;
<a>int</a>
<b>int</b>
</add>
</soap:Body>
</soap:Envelope>

tenx bom nastudiru