Consuming Web services INTO NAV

I am about to build functionality for reading invoice data from a customer into NAV 2009. The customer exposes incoices using a web service on his server.
The problem is that all information from Microsoft, and most postings I have found on the net is about web services cover the opposite; how to expose a webservice from NAV.
From what I have found out it is possible to use automation like XMLHTTP and DOMdocument, but that involves a lot of coding including parsing of the XML.
I guess using an XML port would be better.

Do anybody have some ideas of the best way to do this? Links?

Hello Otto,

Refer this article explaining XML Ports with web services.

http://blogs.msdn.com/b/nav/archive/2009/11/06/using-dataports-with-web-services.aspx

Let us know, how helpful was the article.

Regards,

Congruent Info - Tech