External Display Layout Modification - mpx200

[Guest buy]

Does anyone know where you can go to modify the layout of the External LCD Display? there are only three layouts with the phone when it comes from ATT and I want to change it. Also does anyone know of a place that has a definitive guide on what all the codes are to modify the layouts for the regular home screen? If someone had a program in english to modify all this visually that would be impressive