Wall St. Seen Lower on Oil; Google Eyed  PARIS (Reuters) - Sky-high oil prices are likely to  pressure Wall Street once again on Thursday, while earnings  news from tech giants Ciena &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=CIEN.N target=/stocks/quickinfo/fullquote"&gt;CIEN.N&lt;/A&gt; and Nortel &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=NT.TO target=/stocks/quickinfo/fullquote"&gt;NT.TO&lt;/A&gt; and  Google's &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=GOOG.O target=/stocks/quickinfo/fullquote"&gt;GOOG.O&lt;/A&gt; awaited Nasdaq debut will also steer  sentiment.