well i saw a great basic tut abaut packet editing on this forum (not in deka/2m section) but it was on german >.> so if u re german (i think its german) here u go the link

anyway i dont think there isnt much u can do with packet editing and u have to encrypt/decrypt packets for dekaron(i think....) I tryed to learn something abaut packed editing a while ago but i failed (i know just bearly basics) so good luck mate