Packets for Aika

Well, I came here with a little doubts that may be doubts of others, the parade is as follows:
-According to my knowledge (which is basic because it has not yet concluded my course delphi) and with some research and a matter of logic, MMORPG games saves and logs everything.
For example, you take an item X and sells an NPC, the item will result in an X gold. From what I think, is the result of a gold adress, adress and this refers to the item that was sold to both gold and you will profit. (If I am wrong and there is an adress correct me!)
But ai ta that, I do not know how to get this adress the sale! Can someone explain to me how to get this adress?
I was thinking of being with the game open and use something like DBUG, you know, for example, the item sold, gave al gold appears to adress understand? I do not know if it is possible but any help is accepted * - *
Since now thanks to all the forum \ o :D