When I received my copy of Office v.X (student/teacher edition), I was surprised to find three Product keys for three installations "in the same household." My (first) question: does the "standard" and "professional" version also come wth three licenses (and does the 2004 student/teacher version, for that matter). Question 2: can someone tell me if there's any reason to pay MS money to get upgraded to either the "standard" or "professional" versions under the "Technology Guarantee" upgrade plan? I know about the Virtual PC with the "professional" (which becomes only a curiosity since a real PC doesn't cost much more than $130, not that there aren't other around the house). Also, does Virtual PC that comes with the professional version come with a Windows OS? Thanks.