I'm still stuck, if someone can help me :/ : I have this link : http://www.nickyzai.com/?p=kro
Found there :
http://rathena.org/board/topic/70962-recommended-client-setup/
If someone can say step by step what should I do, maybe I'm doing something wrong... My server is running, I'm connected with a stolen client, I'd like to make my own client :/.