This paper discusses the challenges in computer systems research posed by the emerging field in global computing environment. It first research of this new field to its predecessors: Grid system and mobile computing. It is helpful to find out why and how can we use the spare volunteer-resource. This paper proposes a novel approach based on "virtual resource" come from bionics to share and provide running-time adaptation mechanism. The approach has been implemented and validated within voluntary platform Xtremweb. Finally, we gave a prototype to shows the theory and model mechanism is practical and efficient.