I normally use xterm, because it is the most configurable, most flexible, and most efficient terminal emulation program available to this day, even 20 years after it was first written. I have no idea why everyone feels the need to write their own terminal program; in my opinion, xterm can't be beat. Unfortunately, at least at the moment, xterm on Red Hat can't support entering Korean text. I've got some word that it may already be possible if xterm is compiled against the right libraries, but at least as far as Red Hat goes, that's not happening any time soon.
So then, what to do? No problem...