What you have to do, is extract it into 1 file.
After that, you go to Start --> Run --> and you enter : C:/Windows/System32/drivers/etc/hosts
Then you will see a .txt file named ''Host'' , open it with Notepad or something, and put this at the end of all the data that is in there :
91.198.27.39 gwgt1.silkroadonline.co.kr
91.198.27.39 gwgt2.silkroadonline.co.kr
Good luck