Problem with Japanese NSIS installation

I'm trying to make japanese installation but i'm having problems with displaying of japanese letters.


I defined:
!insertmacro MUI_LANGUAGE "Japanese"


What should I do in order to see the correct japanese letters? I'm using Vista and i've tried to install Japanese language and microsoft MIME but with no success.

Thanks in advance.

You must set the language for non-Unicode applications in the Regional control panel to Japanese.