Couple of questions

Couple of questions:

First of all how do I move the pivot point of an object?  I would like
the picot point at the centre of the object.

secondly I have modelled a simple fork object using curves which I
have converted into a mesh for rendering.  I do have the curve shape
on another layer if necessary.  How do I curve it with a smooth fork
like curve rather than grabbing the vertices and moving as it doesn't
look as smooth when I tried it.