1. Go to http://www.microsoft.com/downloads/details.aspx?familyid=86B71A4F-4122-44AF-BE79-3F101E533D95&displaylang=en
2. Click the "Download" button
This takes you to a page that is supposed to start the download automatically. But the download never starts.
This happens on both Mac and Windows, in both Safari 5.0 and ToT.
This seems to be working now. Maybe the site changed.