Received from a member – I haven't tried it, but it might be of interest.
FREE RUSSIAN SPELLCHECKER
"FREE Russian spell-checker, thesaurus and converter called Hieroglyph,
created in Australia. Click on the link below and download the
hgfull37.exe file. It is 2.9 MB in size but after installation it expands
to over 20 MB. I have just tested it. It can open any MSWord document. I
tried the spell-checker and it works beautifully. You will find it on your
Start, Programs menu."