Summary: Secure large-scale Java distributed computing is at the heart of the 2.0 Jini release. Every aspect of building a secure distributed computing environment is configurable in Jini. However, that freedom introduces a new set of choices Jini developers and service deployers must make. To ease that complexity, Jini 2.0 introduces a service configuration model. Instead of the configuration language du jour - XML - the Jini model uses Java objects to configure complex services and their clients. This article provides a tutorial on using the Jini service configuration model, and also illuminates the decisions by the Jini architects to rely on objects, rather than on a document model, for service configuration.