Charles Schwab Corp. to Pay \$350,000 Fine  NEW YORK (Reuters) - Charles Schwab Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=SCH.N target=/stocks/quickinfo/fullquote"&gt;SCH.N&lt;/A&gt; on  Tuesday said it had agreed to pay a fine of \$350,000 to settle  SEC enforcement proceedings related to the processing of mutual  fund orders.