My application is so successful that it needs to go global.  

The only problem is that that means Japanese.  I don't know the first thing
about making a Japanese language application.  I know I have to use Unicode,
but that's about it.

In case it matters, the user will be presented with a dialog, and he can
choose, dynamically, which language it should be rendered in.  So, it isn't a
matter of linking a particular resource file for Japanese on one machine, and
a different one for English on a different machine.  Both must be available,
based on user choice.  

Is there a simple "Hello, World" application for the .Net framework, but in
Japanese?  Or any sample applications that make use of Japanese?  I don't
even know where to find a Japanese font.

Any help would be appreciated.