Stocks End Flat; Internet Shares Rise  NEW YORK (Reuters) - U.S. stocks ended little changed  on  Tuesday as Internet companies like eBay Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=EBAY.O target=/stocks/quickinfo/fullquote"&gt;EBAY.O&lt;/A&gt; supported  technology shares, while higher oil prices and worry about fuel  costs kept a lid on overall sentiment.