Grid Computing Technologies are mature enough to be successfully applied to computationally intensive sci- entific applications. However, the current process of applying Grid Computing to them is still hard and difficult for the least experienced users. In this pa- per we describe the adaptations made to the GMarte metascheduling framework in order to provide an ubiq- uitous access to its functionality as an efficient re- source broker for the execution of tasks on computa- tional Grids. A metascheduling component accessible by only means of a Java-enabled web browser has been developed, requiring almost zero configuration by the client. This approach has enabled to produce a generic multi-platform metascheduler which can be automati- cally deployed in the clients interested in resource bro- kering on computational Grids based on the Globus Toolkit.