The Science Information Network (SINET3) is an ultra-high-speed network built and operated by the National Institute of Informatics, centered around the Cyber Science Infrastructure (CSI).Once the Next-Generation Supercomputer is connected to this network in early FY 2012, RIKEN will begin offering an advanced remote-use environment for grid computing using NAREGI middleware. This connection will enable the nationwide National Infrastructure System (NIS) to work together with systems at the level of research labs, making available common-use facilities capable of responding to the various demands of its users.