using graphical means, in certain cases it is even possible to alter parameters of the computation whilst it is running, depending on what the scientist sees in the current visual output. This ability to monitor and change parameters of the computational process at any time and from anywhere is called computational steering. By combining this capability with advanced communications tools, like the Access Grid, over high-speed network it is now possible for a group of scientists located across various continents to work collaboratively on simulations allowing them to compare ideas and to share their experience. In this paper, we present such an advanced collaborative computational steering environment specialized to solve CFD problems.