Thanks for your input. I actually got it working after reading this document: http://www.soaplite.com/2003/05/composing_messa.html . It seems that the guy on the server end misled me about the XML I was sending. He assured me that I should include the XML Declaration with what I was sending, but that is apparently not the case. I also scrubbed out any newlines for good measure. Then, everything was peachy! (He did offer WSDL access but said "I don't think you'll be able to use the wsdl though since I'm exposing complextypes"--whatever that means!)