I'm going to give you a little crash course in hacking.
The first thing that you want to do, is make a copy of your client (make a copy of your game).
Download this
it's a bypass. To use the bypass unpack it to some folder (like a New Folder in your desktop).
Run the "Launcher.exe" as admin.
Once the window opens uncheck the "Bypass xigncode" and check the "bypass CRC".
Click "select file" and find your way to ,...,GameHi\Dekaron\bin\Dekaron.exe and click "Launch".
Log in with a low level account, run around for a bit, change the server two/three times and exit the game through esc>exit game (don't just crash it).
Now go to the dekaron folder (The one where you ran the exe), go to the "bin" folder and look for a folder named "CRC" (if you found it, move on to the next step).
Go to Gamehi\Dekaron\data and unpack the files (place an unpacker in that folder and run it, I personally use this one
)
Once it's done, go to Gamehi\Dekaron\data\unpacked, take all those files and folders, copy them to the "data folder" (you might need to replace some stuff, don't worry).
Open shadow.txt, go to the line PackIO and change the 1 to a 0 and save the file.
This is as far as I'll go with this tutorial, now your cleint is almost ready for hacking, you just need to edit some files, read some more about that here
and
just don't use excel for file editing (people seem to have problems with it.