Virtual team issue has emerged as an important new teamwork model, distinguished from the conventional way in which people work by its ability to transcend distance, time and organizational boundaries. A virtual team consists of a dynamic collection of individuals, a set of collaborative services and network facilities that ensure a flexible and secure coordinated resource sharing. In the Multimedia and Mobile Agent Research Laboratory we have developed the V-Team system, an agent-based multimedia collaborative environment to support virtual teams. V-Team aims to provide a set of team services for better collaboration between a virtual team participants, facilities for managing virtual teams with fully customized team services, and a simpler interface to network services. In this paper, we describe the main components of V-Team, the principles of context customization and the system monitoring approach via policies.