Things we are gonna need areBlender 2.7x http://www.blender.org/XPS tools addon for Blender (Blender 2.7x XPS Tools 1.1 made by yours truly )A model made with materials for Blender internal
For Mac Users
Safari automatically unzips downloaded files and deletes the original ZIP file.
Try disabling this function (I don't know how, I never used a Mac) or download using another browser like Firefox.
PreparationUPDATE: Here is a video showing the install process. Thanks a lot!
Install Xps addon to blender
First thing we have to do is to installing the addon.
Go to the provided link and download the latest version of the addon. DO NOT UNZIP IT.