Without good advice, many churches will load up on old equipment before they even survey what kind of software is available. Even if you started with older equipment, remember that they will be getting started at a different period of time in the development of this medium. They need to be CD-capable right out of the gate. There are a variety of ways to incorporate computers into C.E. and there are a variety of software types. Early low-key experimentation will allow teachers to find their way.
Many educators automatically think about using computers first with their teen classes.
Experience indicates they should first experiment with older elementary age children who are easier to manage. A few churches are able to muster a lot of brand new equipment before they gain any teaching experience. It's more important to explore the medium, learn what it feels like to use it in C.E., and train your teacher than to please all the folks who want the project going full throttle. Church techies can often give educators the wrong advice about equipment and set-up because they are often operating out of a business office paradigm or thinking about how the public schools use computers. My philosophy is that if they start small and slowly get experience, the answers to these questions will be self-evident.