In this paper, we present a novel approach to glycomics: collaborative molecular simulation. Glyco-MGrid is a collaborative grid environment for glycobiology which supports simulation, databases and trajectory analyses in an integrated way. It allows the global glycomics community to share simulation results and to continue further research from previous results by other individual scientists or research groups. Currently, over five hundreds of simulation results for glycans and glycoproteins are available from the Glyco-MGrid system (http://glyco.mgrid.or.kr) running on the grid testbed at the Konkuk University Applied Grid Computing Center. In addition, we have been extending the Glyco-MGrid system to build a shared simulation data repository for the Avian flu grid project at PRAGMA (http://avianflugrid.pragma-grid.net).