Stocks to Watch Friday  NEW YORK (Reuters) - Stocks to watch on Friday: MICROSOFT  CORP. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=MSFT.O target=/stocks/quickinfo/fullquote"&gt;MSFT.O&lt;/A&gt;: The world's largest software maker will suffer  serious harm if it is forced to provide a version of Windows  without Windows Media Player audio-visual software, its lawyer  told a European Union court.