Não roda meu Hibernate

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC 
"-//Hibernate/Hibernate Mapping DTD 3.0//EN" 
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
<hibernate-mapping package="com.persistencia">
	<class name="Curso">
		<id name="id">
			<generator class="increment"/>
		</id>
		<property name="descricao"></property>
		<property name="nome"></property>
	</class>
</hibernate-mapping>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
		"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
		"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
	<session-factory>
		<property name="hibernate.dialect">
			org.hibernate.dialect.MySQLDialect
		</property>
		<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
		<property name="hibernate.connection.url">jdbc:mysql://localhost/hibernate?autoReconnect=true</property>
		<property name="hibernate.connection.username">root</property>
		<property name="hibernate.connection.password">simbad</property>
<!-- Condiguração do c3p0 -->
		<property name="hibernate.c3p0.max_size">10</property>
		<property name="hibernate.c3p0.min_size">2</property>
		<property name="hibernate.c3p0.timeout">5000</property>
		<property name="hibernate.c3p0.max_statements">10</property>
		<property name="hibernate.c3p0.idle_test_period">3000</property>
		<property name="hibernate.c3p0.acquire_increment">2</property>
<!-- Configurações de debug -->
		<property name="show_sql">true</property>
		<property name="hibernate.generate_statistics">true</property>
		<property name="hibernate.use_sql_comments">true</property>
		<mapping resource="Curso.hbm.xml"/>
		<mapping resource="Disciplina.hbm.xml"/>
		<mapping resource="Turma.hbm.xml"/>
		<mapping resource="Pessoa.hbm.xml"/>
		<mapping resource="Aluno.hbm.xml"/>
		<mapping resource="Professor.hbm.xml"/>
		<mapping resource="Endereco.hbm.xml"/>
	</session-factory>
</hibernate-configuration>

package com.DAO;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class HibernateUtility {
	private static SessionFactory factory;
	static {
		try {
			factory = new Configuration().configure().buildSessionFactory();
		} catch (Exception e) {
			e.printStackTrace();
			factory = null;
		}
	}	
	public static Session getSession() {
		return factory.openSession();
	}
}

package com.persistencia;

public class Curso {
	private String nome;
	private String descricao;
	 public void setNome(String nome){
		this.nome = nome; 
	 }
	 public String getNome(String nome){
		 return nome;
	 }
	 public void setDescricao(String descricao){
		 this.descricao = descricao;
	 }
	 public String getDescricao(String descricao){
		 return descricao;
	 }	 
}

org.hibernate.MappingNotFoundException: resource: Curso.hbm.xml not found
	at org.hibernate.cfg.Configuration.addResource(Configuration.java:769)
	at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:2314)
	at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:2280)
	at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2260)
	at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2213)
	at org.hibernate.cfg.Configuration.configure(Configuration.java:2128)
	at org.hibernate.cfg.Configuration.configure(Configuration.java:2107)
	at com.persistencia.HibernateUtility.<clinit>(HibernateUtility.java:11)
	at com.persistencia.Teste.main(Teste.java:10)
Exception in thread "main" java.lang.NullPointerException
	at com.persistencia.HibernateUtility.getSession(HibernateUtility.java:18)
	at com.persistencia.Teste.main(Teste.java:10)