Hibernate version: 3.1
Name and version of the database you are using: Oracle 10.2

I've reverse engineered a set of tables. Each of the Home objects created has its own getSessionFactory method. I'd like them all to use the HibernateUtil*.getSessionFactory method. How can I accomplish this in the reverse engineering process, without modifying the code after reverse engineering?

*
package com.fitness.max.pricing;

import org.hibernate.*;
import org.hibernate.cfg.*;

public class HibernateUtil {

private static final SessionFactory sessionFactory;

static {
try {
// Create the SessionFactory from hibernate.cfg.xml
sessionFactory = new Configuration().configure().buildSessionFactory();
} catch (Throwable ex) {
// Make sure you log the exception, as it might be swallowed
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}

public static SessionFactory getSessionFactory() {
return sessionFactory;
}

}

customize the templates.

Can you elaborate? I saw various references in the Forum to templates, but can't find anything specific. Are you referring to this, from the Tools Reference Documentation:
4.1.3.7. Generic Hibernate metamodel exporter (<hbmtemplate>)?
I see an option to use custom templates on the Code Generator, and assume this is referring to same. Are there any examples online?

yes in the docs and on this forum. use the search functionallity.