Opening the Living Room Windows Microsoft is going to Tinseltown today to announce plans for its revamped Windows XP Media Center, part of an aggressive push to get ahead in the digital entertainment race. &lt;FONT face="verdana,MS Sans Serif,arial,helvetica" size="-2" color="#666666"&gt;&lt;B&gt;-washingtonpost.com&lt;/b&gt;&lt;/font&gt;