Hi Michael,

Considering that i own a commercial version of Rhino V5, i'm thinking that i could also use Rhino + Grasshopper and Rhino Script Compiler for Rhino5.
(for example i saw that Grasshopper has a ControlPoints component that extracts the nurbs control points and knots of a curve.)

Maybe it could be a good idea...

Ciao!

Marco (mkdm)