Microsoft Renews Push for Living Room PC  SEATTLE (Reuters) - Microsoft Corp. &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=MSFT.O qtype=sym infotype=info qcat=news"&gt;MSFT.O&lt;/A&gt; is making a  renewed push this week to get its software into living rooms  with the launch of a new version of its Windows XP Media  Center, a personal computer designed for viewing movies,  listening to music and scrolling through digital pictures.