Arduino ADK component for Eagle


I'm trying to develop a shield for use with the Arduino ADK. I'm however having trouble finding an Eagle Library which supports the extra pins - Most seem to focus on the smaller Arduino form. Does anyone know where I could download a working library for it? I've tried looking at the existing footprint for the ADK, but my Eagle-fu isn't what is used to be, so I'm unsure about how to actually make a library from it.