Information-Technology Based Laboratory (ITBL) project has been propelled as one of e-Japan priority policy programs. The purposes of the project are to share intellectual resources such as remote computers, programs and data in universities and institutes and to support cooperative studies among researchers, building a virtual research environment, ITBL. Japan Atomic Energy Research Institute (JAERI) has been working on installation and management of hardware and development of infrastructure software and applications. As application software, researches on quantum bioinformatics and environmental sciences are carried out. This paper presents utilization of ITBL system infrastructure software for 'Numerical Environment System' which is developed for environmental studies. More effective job executions and visualization are expected by using Task Mapping Editor (TME) and AVS/ITBL, which are tools developed as infrastructure software. © Springer-Verlag Berlin Heidelberg 2003.