log4net - configure existing appender programmatically.

[THY02K]

Hi, I have added an SMTP appender to my application using Log4Net for logging and notification - but how do you change pre-configured value (in App.Config)? Here's appender section in my configuration file:

<appender name="SmtpAppender" type="log4net.Appender.SmtpAppender">
			<to value="[email protected]" />
			<from value="[email protected]" />
			<subject value="xxx" />
			<smtpHost value="localhost" />
			<bufferSize value="512" />
			<lossy value="true" />
			<evaluator type="log4net.Core.LevelEvaluator">
				<threshold value="WARN"/>
			</evaluator>
			<layout type="log4net.Layout.PatternLayout">
				<conversionPattern value="%newline%date [%thread] %-5level %logger [%ndc] - %message%newline%newline%newline" />
			</layout>
		</appender>

The closet thing I found is: http://www.ondotnet.com/pub/a/dotnet...et.html?page=3

But, that's adding a new appender altogether, not re-configuring existing appenders. I need to change to/from email address. Thanks in advance.