The grid is the next generation computing infrastructure able to handle the growing requirements for computing power. Portals are anticipated as the user’s access point to these resources. The whole gridportal infrastructure constitutes a distributed environment in which efficient and flexible communication manners play a key role. The emerging web services technology has been chosen as the best solution for organizing communication in grid-portal systems. In this paper we would like to present the PROGRESS grid-portal environment in which we implemented web services communication between distributed modules of the system.