Rest based web services

[Arne]

I have a classic Asp web page that wants to post a message in XML format to
an ASP.net page.
What is the best way to do that?

I am tring to call the ASP.net page with
Set oXMLHTTP = Server.CreateObject("MSXML2.ServerXMLHTTP")
oXMLHTTP.Open "POST", url, False
oXMLHTTP.setRequestHeader "Content-Type", "application/x-www-form-urlencoded"
strPostData = "xml=" & Server.URLEncode(strXML)
oXMLHTTP.Send strPostData
I can not redirect through the browser. I have too much secret information.
Am I on the right track?