Mouse positioning

When I start jME and move my mouse the world  spins in all directions consistant with the mouse. How can I disable this ar controle this feature inorder to getthe world stable or unresponsive to the mose.

Any class that extends SimpleGame automagically has a pre-defined InputHandler.  You can replace this with your own by simply instantiating your own InputHandler and replacing the protected InputHandler "input" in the class.