I wont even bother trying to decipher what zipper is. Use reshacker. google it.
Open Flyff.exe with ResHacker and click the + on the IMAGE folder
click the + on the 104 Image Right click the 1033 image and click Save IMAGE:104:1033 and save it somewhere
Edit it with paint or photoshop or whatever, save it as a JPG image then go back into ResHacker right click the 1033 and click replace resource click the button at the top of the window and select the new image you just saved and click Replace.
Then save Flyff.exe (File->Save) and it should have worked.
