How to view and type Japanese characters
If you can view webpages with Japanese characters on them, chances are you can probably input them via the keyboard. Below are a few resources that you can use to enable this Japaense support on your computer. If done correctly, the box above this one should have the reading 'renshuu', or 'practice'.
Enabling Japanese character support (All Windows versions)
Enabling Japanese character support (Windows XP, with pictures)