These examples should get you started.
http://blog.netnerds.net/2008/02/create-a-basic-sql-server-2005-trigger-to-send-e-mail-alerts/[/url]
http://www.datasprings.com/Resources/ArticlesInformation/CreatingEmailTriggersinSQLServer2005.aspx
Pradeep Adiga
Blog: sqldbadiaries.com
Twitter: @pradeepadiga