Running 6.5 sp5

I have two new members of staff who are Russian speakers and who do a
great deal of their work in Russian.

There is no problem of filing the Word and other files in Russian on the
server but they cannot use Russian Characters in the file names.

I have tried loading Charset CP866 and 855 but that seems to make no

I would be pleased to hear from anyone with some assistance. Sadly I do
not speak or write Russian