If you can see cable tv (ordinary package), you can see KBS World. No need to subscribe for Int'l pack.
If you subscribe for International pack you may see arirangtv, an English channel of a Korean tv. But the drama and movie program of arirangtv is really "old".
If you want to see other Korean channels you can only see it in the internet. For KBS 1/2 ,you may goto their offical home page and subscribe for a membership. Then you can see all the program on your computer.