Problem with language and fonts

[Samos]

FileMaker Pro 5, Windows Platform.

I live in Russia. Initially the database was made and the data were entered on a computer with regional settings "English (United States)". When clients have started to be connected to this database from computers with regional settings "Russia" all data in a database, filled in Russian have a not readable kind. If on clients computers to establish regional settings in "English (United States)" all will be good but so I can not make because many programs in Russian cease to work. I know, that something can be changed in registry in CurrentControlSet that at "Russia" settings all data data in databases in Russian language saw normally, but I can not find, where also what exactly needs to be changed. (the parameter from FileMaker registry - FontSubstitutes does not play a role, it is checked up). Heeeeeelp, pleeeaase.