I have been learning Grasshopper for Rhino (graphical scripting, basically) and made a NACA 00xx series foil generator today (for helping with rudders). Once you have the size/shape you want, you highlight the module and 'Bake Selected' which will turn it into actual geometry inside your Rhino file (either points, a curve, or both).

File is at the link below.

Grasshopper is free download from Rhino3d.com. Rhino required, of course.

Eric