Stocks Seen Flat After Warning by Nortel  NEW YORK (Reuters) - Stocks were set to open near unchanged  on Thursday following a warning from technology bellwether  Nortel Networks Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=NT.N target=/stocks/quickinfo/fullquote"&gt;NT.N&lt;/A&gt; and a further rise in oil prices  as Hurricane Ivan struck the Gulf Coast.