I'm having a hard time understanding how this is supposed to work. I was trying to use Rick Strahl's SOAP Manager, but now I'm not sure it's going to work for me. This is a section from documentation that is supposed to give an example of how the requests are made to their server.

What I know:

URL
UserName
PassWord
ANSI Message to be sent

What I can't figure out is how to send it in the right way. Their programmer who has no experience with Foxpro (go figure!) said that this uses "pure HTTP for the authentication, then uses SOAP for the XML document." Any help greatly appreciated.

SOAP Request over HTTP Transport

POST /Realtime/services/realtime HTTP/1.0
Content-Type: text/xml; charset=utf-8
Accept: application/soap+xml, application/dime, multipart/related, text/*
User-Agent: Axis/1.0
Host: teligibility.transactions.mckhboc.com
Cache-Control: no-cache
Pragma: no-cache
SOAPAction: ""
Content-Length: 888
Authorization: Basic d2Vic2VydmljZTpTb2FwVXNlcjE= 

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-
instance">

 <soapenv:Body>
  <ns1:submitRealtimeRequest soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" 
xmlns:ns1="urn:realtime">
   <request xsi:type="xsd:string">ISA*00*          *00*          *ZZ*123456         *ZZ*MCKESSON_TSH
   *031013*1636*U*00401*000000001*0*T*:~GS*HS*123456CM*MMOSCC*20031013*1636*000000001*X*004010X092~ST*270*
000000001~BHT*0022*13*200112141357*20011214*1357*~HL*1**20*1~NM1*PR*2******PI*MMOSCC~HL*2*1*21*1~NM1*1P
*2******SV*EXG033~HL*3*2*22*0~NM1*IL*1~REF*HJ*1234567890~DTP*472*RD8*20030101-20030101~EQ*30~SE*12*0000
00001~GE*000001*000000001~IEA*00001*000000001~</request>
  </ns1:submitRealtimeRequest>
 </soapenv:Body>
</soapenv:Envelope>