Has anyone done any VB.NET SOAP development to send commands to a Sony BDP-S780 player or any other model?

I was given some information about the commands but do not have any experience in this area. I tried some code using HttpRequests and was able to at least get a response back from the device but it didn't control anything. The response was just telling me a connection was made and then closed.

Play
----

-POST /SkyPlay2 HTTP/1.1
-SOAPACTION: "urn:schemas-nds-com:service:SkyPlay:2#Play"
-Content-Type: text/xml; charset=utf-8
-Content-Length: xxx

-<?xml version="1.0" encoding="utf-8"?>
-<s:Envelope s:encodingStyle="schemas.xmlsoap.org].." target="_blank">http://schemas.xmlsoap.org/soap/encodeing/ 
mlns:s="schemas.xmlsoap.org].." target="_blank">http://schemas.xmlsoap.org/soap/envelope/
-<s:Body>
-<u:Play xmlns:u="urn:schemas-nds-com:service:SkyPlay:2">
-<InstanceID>0</InstanceID>
-<Speed>1</Speed>
-</u:Play>
-</s:Body>
-</s:Envelope>