You can translate the world with LingvoSoft!
English-Japanese Kanji-Romaji Dictionary (Windows) is a free to try software. You can free download and try it for an evaluation period.
LingvoSoft Dictionary English <-> Japanese (Kanji) for Pocket PC
This LingvoSoft Dictionary English Japanese (Kanji) for Pocket PC with 400.000 words, built to operate on mobile devices running the Pocket PC platform, is a full-featured dictionary that is always ready to go when you are.