Hibernate - arquivo de configuração

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration
    PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
    "http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">

<hibernate-configuration>

    <session-factory>

        <property name="connection.datasource">java:comp/env/jdbc/dbMySIE</property>
        <property name="show_sql">true</property>
        <property name="dialect">net.sf.hibernate.dialect.Oracle9Dialect</property>

        <!-- Mapping files -->
        <mapping resource="Cat.hbm.xml"/>

    </session-factory>

</hibernate-configuration>

sessionFactory = new Configuration().configure().buildSessionFactory();

net.sf.hibernate.HibernateException: /hibernate.cfg.xml not found