I have a problem to type in Korean Characters(with Windows 7)

Hi, there~ I want to type in "대한민국" directly in paragraph, h1 etc... But this app shows me like this; "ㄷㅐㅎㅏㄴㅁㅣㄴㄱ ㅜ ㄱ". So I have to use notepad first then copy and paste. Is there any solution? Thanks ahead~