Microsoft is about to give Media Center PCs a new point of view. The Redmond, Wash., software giant is expected to unveil <A HREF="http://www.eweek.com/article2/0,1895,1870049,00.asp?kc=ewnws101205dtx1k0000599">an update for its Windows XP Media Center Edition</A> operating system that will boost the computers' abilities to tap online entertainment such as movies, access email, and even let users go shopping via the special user interface, designed to allow easy access to multimedia.