We discuss research on interaction in a virtual theatre that can be accessed through Web pages. In the environment we employ several agents. The virtual theatre allows navigation through keyboard and mouse, but there is also a navigation agent which listens to typed input and spoken commands. We also have an information agent which allows a NL dialogue, where input is keyboard- driven and output is by tables and template driven NL generation. In development are talking faces for the agents. A user’s commitment to this environment is increased by increasing ‘presence’.