Bezier curve from mesh

We can convert mesh into curve using Alt+C, but it isn’t a bezier curve. Can we make a bezier curve from mesh?

Thx for help

Select object
Go into edit mode
Select all faces (A)
Delete faces (X / Delete Only Faces)
Go to object mode
Convert to curves (Alt+C / Curves from Mesh
Go into edit mode
You curve will be made of Poly Splines
You can change these to bezier curves in the Toolshelf (T) under the ‘Set Spline Type’ option

Demo: http://screencast.com/t/NAbdEYxbKnY

Brilliant! Thx a lot!!! (: