>Maybe I could help you some more if I understood the particular reason _why_ you want to use this Softimage function on your surfaces to begin with... What is it that you're looking to gain by doing that?
It's not only that. Actually I already have a small set of tools for attaching the NURBS grids to portions of mesh subd hull, mainly used for "unusual" purposes, like rigging, hair styling, emitting particles, so on. Something like "poor man T-Spline". From my understanding, if NURBS grid is attached to arbitrarily shaped, quad like mesh structure, it acts like "uniform". By the way, Maya has exactly the same function, with same name.
This time, as I have to stop with experiments. It's much easier to me, to attach these NURBS grids in Softimage, to existing mesh, then to export IGES to MOI for adding details - instead of finding curves on it. It's space ship model for use only in DCC app, accuracy doesn't matter. It's not what we consider as "organic".
Next time I hope I'll be able to do everything in MOI.
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