writing cyrillic with N73

Hi All! 😊 Because this is my first post, let me congratulate on this great site! :icon14:
I bought a Nokia N73 in Italy, and it can work with Italian, English, French, Spanish and German languages. I need to type cyrillic characters! How can I do? do programs like Psiloc Crystal Localization exist for this kind of mobiles? Or is it possible to change the software(firmware) for making it write in Russian?
Thank U very much in advance!
Stefano B.