The Japanese IME on windows 2000 (and probably other versions of windows too) has a built in geographical/names dictionary.
To use it, right-click on the IME, then select ϊ[h@then l/n.
In this mode, when you type in hiragana, the IME searches the full names/geographical locations dictionary when converting. To convert from kanji into hiragana, open Word, put the kanji into a blank document, highlight the term, right-click and select "Reconvert". This should bring up a window with the standard reading and possible alternate kanji with the same reading. If there is more than one reading, at the bottom of this window there is a field "ǂ. The different readings are listed here. To try it out, type in the word l, then reconvert. When you click on ǂ the three readings of l are listed.
Thanks for your suggestions.
Somehow I am not able to reconvert. I highlighted the word, right clicked but my reconvert option (ĕϊ) is disabled. I have win 2000 and Japanese O/S.