When I go to connect and download the Windows 7 Software Logo Requirements v1.7.docx, it downloads a zip file. Unzipping the file gives me a somewhat familiar view.
I've seen this before. This looks like a OPC document. Since OPC is XML wrapped in Zip format it would make sense. I renamed the file to docx. Now I can open it.
By the way, what is really nice is that apparently Wordpad is the default handler for docx files on Windows 7.