In recent years grid computing has evolved from simple batch processing systems to highly interactive applications. One approach heading in that direction is the edutain@grid project. This project aims to enable the computing power of current grid systems to the area of online computer games and e-learning applications. The shift from traditional scientific computing applications into the domain of business oriented applications has led to the involvement of a variety of actors. All of these organisations and persons have different needs considering the access to the system. To communicate with the edutain@grid system a novel combination of portals had to be developed. Three types of portals allow the stakeholders to get access to this system. These portals allow a unified and consistent interface approach hiding the complexity of traditional grid applications in order to support users from all different fields to work with edutain@grid in an intuitive way.