FCC OKs Cingular Bid for AT T Wireless  WASHINGTON (Reuters) - The U.S. Federal Communications  Commission said on Tuesday it has conditionally approved  Cingular Wireless' \$41 billion cash acquisition of AT T  Wireless Services Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=AWE.N target=/stocks/quickinfo/fullquote"&gt;AWE.N&lt;/A&gt;, clearing the last big hurdle  for the deal.