Moving Points Along A Curve

Hello,

I am relatively new to grasshopper.  I have searched the discussion boards, but none seem to respond directly to my problem and I cannot seem to implement the tools suggested. 

I have divided a curve into points, set a rotation to the planes derived from the points, and created a box from those points.  I need to move (or shift) the points along the curve while maintaining their equal spacing so that the boxes created will be shifted up the curve.  It seems I can move them along an x y or z plane, but not in an orientation so that they are following the curve.

Thanks for the help in advance