unicode documents on non-unicode platform

MS Office (97 and higher) allow to display the unicode documents (xls or doc) on old Windows 95/98/ME

I don’t know how this feature implemented there because these platforms don’t support the unicode at all. Seems like unicode library deployed with MS Office but not “published” in Windows OS.

Anyway I want to use this library:-) Because I can’t describe to customers for our viewers why MS Office display the Japanese or Chinese characters on French Windows 98 but our viewer displays the strange chars instead…