How can I add/delete/edit curves for a fbx object on Unity3.0?

I want delete Position.x & Position.y from a fbx object's animetion.

I did it on Unity 2.x,but on Unity3.0 I can't.

How can I add/delete/edit curves for a fbx object on Unity3.0?

You will need to duplicate the Animation in your imported FBX. It's a read-only animation. With your duplicate you can modify the animation curves.