CATIA is a 3D solid modeling tool and would be used for designing products e.g. gearboxes or turbines, rather than for modelling a whole plant. We do not have a library for CATIA and there are no plans to create one.
Direct 3D dxf export from our software is planned for the end of 2009, and we believe the 3D images created will be able to be read by any 3D program.