I had a few requests for this wrapper so I uploaded it here. It includes compiled binaries for the latest SVN version of the engine (dll's and lib files).
Please let me know if you have any troubles downloading it. After downloading the wrapper I suggest you download the Horde3D SDK, look at the samples and try to convert them to PB (I suppose I will do this at some point as well if I continue to maintain the wrapper in the future).
Horde3D is a great engine but is sort of lacking in tutorials and samples. Hopefully this will get changed in the future.