The first thing you need to do is download
openkore(choose the openkore_ready.zip). After that you will need extract it. If you don't have an extractor you can get one here
WinZip. After extraction this is what you should do:
1. Log in your character and make sure its in a town and in view of the kafra you use for storage.
2.Open start.exe
3.Enter your server number.
4.Type in your username and password.
5.Enter you server number.
6.Finally you can enter you character number and log in.