Enron's Chief Financial Officer Resigns  NEW YORK (Reuters) - Enron Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=ENRNQ.PK target=/stocks/quickinfo/fullquote"&gt;ENRNQ.PK&lt;/A&gt; said Friday  Chief Financial Officer Raymond Brown resigned and will be  replaced on an interim basis by Robert Bingham.