[Unte99]

So you have to have a player variable that contains his all used nick names with that registered IP of his. When the player registers, add the first used name (Big_Benny or something...) to the variable. Then, when the player uses another name, just add it to the variable. For that adding part, your'e going to need str library. To detect the position of the last letter of the name and add another name at the end. But don't forget to check the IP, if the IP that is stored in the file is the same as the player's.


EDIT: I don't think that I have to explain the name showing part, yes ?