The config dialogs should support internationalization. All the messages should be translatable.
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Added to word2007 branch with r37.
All labels in the config dialog are now set based on language specific values set W2MWP_Language_Init. You can test this out by opening changing your language to Vietnamese or something. If a language doesn't define all messages then the default English value is used.
The macro messages are now stored in Betawiki and translatable there. Just go to http://translatewiki.net/w/i.php?title=Special%3ATranslate&task=untranslated&group=out-word2mediawikiplus&language=en&limit=100, select a language and knock yourself out. The BetaWiki team is awesome.
I also added support for Unicode messages by converting the Unicode strings (like from Russian) into a series of ChrW & statements. Take a look at W2MWP_Language_Init for an example. There is a tool to do this conversion automatically here: http://teaandbiscuits.org.uk/drupal/node/77.