The following link (to vtk FAQ) could perhaps add to Sebastian's reply. It gives some useful info on adjustments to CMake ect. http://public.kitware.com/cgi-bin/vtkfaq?req=all#2.5 Thanks, Sarju Michael S. Vaz 324607 Georgia Tech Station Atlanta Georgia, 30332 Internet: gte631d at prism.gatech.edu SMS : sarju at voicestream.net