Oh, unless you have language support you would have to use google translator. Write anything and have it translate from one language to another, Then copy the words from there to here. As of now that's the way I do it. If I had a better system I could've used language support but I don't have it. Here's the link. Its already set to english to japanese.
http://translate.google.com/translate_t?sl=en&tl=ja