This paper describes an object-oriented approach to linking a three-dimensional visualization to an event-oriented simulator. The goal is an extremely realistic visualization, which is, therefore well equipped for customer-oriented presentations. This is achieved by using computer-generated, three-dimensional animation. In realizing this approach, a modular concept is suggested which allows- aside from offering an easily establishable link to a variety of simulators - the most automated animation possible. The animation system CASUS, a synonym for Computer Animation of Simulation Traces, will be discussed in large, as well as the necessary communication tools.