Freight Calculation in Shipping Module

[newbie456]

Hi there, is there a way or does anyone know how will I make my own calculation for the freight in shipping module? and also where am I going to put that?


Ive tried this to make my own shipping module by following this link

http://www.zen-cart.com/wiki/index.p...hipping_Module


but when I go to the Admin panel >> modules >> shipping, this what had happened




I cant see the module that I make, and the actions to be made on other modules were seem missing


Any help is so much appreciated form you guys


Cheers