This paper provides a brief introduction for the minitrack on Tools and Models for Group Collaboration. As organizations are beginning to embrace the concept of being virtual, they increasingly need to provide technology to support group problem solving when group members are dispersed. Many theories have been developed to advance knowledge in this area, but the experimental results provide inconsistencies across the full range of tools and tasks. The development of a full range of tools and models that support a comprehensive set of collaborative activities is in the embryonic stages. The goal of developing such models will result in a more solid understanding of what virtual groups need to collaborate on various types of tasks.