Redhat 9 => typing Korean!!!

Hi,
I installed Redhat 9. I can't type Korean!!
I can read Korean with no problem from Firebird browser . I installed "keyboard layout switcher" (in Gnome panel). I don't know how to use it. (European languages like French works fine but not Asian languages.)
I also have "ami" but I don't know how to use it either.
I also want to type Japanese.
If you know how to switch keyboard in RH 9, please tell me ... TT

-Pil