In distributed collaborative applications, the use of centralized repositories for storing shared data and programs compromises some important characteristics of this type of applications, such as fault tolerance, scalability and local autonomy. Applications like Kazaa, Gnutella and Edutella exemplify the use of peer-to-peer computing, which is being considered an interesting alternative for the solution of the problems mentioned above, without imposing typical restrictions of centralized or even distributed systems such as mediators and HDBMSs. In this work we present the TEAM (Teamwork-support Environment Architectural Model) architecture for managing workflows in the Web. Besides describing the components and connectors of the architecture, which is based on P2P computing, we address the modelling of processes and management of data, metadata and execution control information.We also discuss the strategy adopted for queries dissemination and messages sent to peers in environments based on the architecture. We illustrate the application of TEAM in a case study in e-learning.