Language Patching?

This is not possible with the current knowledge of the WZ files. If it were possible with the current knowledge of the WZ files, it would require extensive modification to those files and, even then, not all text would translate (like buttons and all NPC text).

Well assuming each "bit" of the korean is a seperate hex, you could easily replace it with English and then fill the rest with spaces. I realize that the UI (that uses images) wouldn't be translated, but I assume that most of the NPC text (ones controlled by the client) would be editable.