SimpleMove Without Gravity

I’ve got SimpleMove working but my character flies as well as runs around, but since simpleMove always applies gravity when I use it it will drag my character to the ground if I’m flying. Any ideas on how to turn the gravity portion of SimpleMove off?

    var controller : CharacterController = GetComponent(CharacterController);
	var backward : Vector3 = transform.TransformDirection(Vector3.forward);
	controller.SimpleMove(backward * -7);

use move instead of simple move