This implementation is done with:
•A GN4 DLL (GN4-Wordpress.dll) exporting methods to be used by a workflow
•JoeBlogs DLL (http://www.alexjamesbrown.com/projects/joe-blogs/), an open-source .NET DLL which provides a simple encapsulation of:
•XML-RPC.NET (http://xml-rpc.net/), which we have been using before (although I've been using the latest version)
•A GN4 Publishing destination (workflow)
•A XSL called by the workflow but imported separately in GN4
•A change to the schema, having a node <pubInfo name="" value="" valueExtra=""/> for articles and multimedia elements (or any elements to be published)
Note
Download the required file from the Forum: http://forum.teradp.com/files/mpusterla/2012102612352_GN4_Wordpress.zip