Virtual Reality (VR) systems have a recent story from the social and practical applications point of view. The main idea related to this area refers to the use of three-dimensional environments in which users can explore and interact in virtual worlds and feel immersed and involved in this process. Nowadays the state of art in VR researches includes collaborative VR environments for medical training and teaching. The use of such collaborative environments allows students to share their knowledge or to be assisted by a tutor during a simulation. This paper presents the development process of a module for interactive collaboration to CyberMed, a framework available since 2004 to speed up the building of medical simulations based on VR technologies. The module for collaboration that was integrated to this framework was used to develop test applications.

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