Charset of announcements

Greetings..
Text of announcement displays in R4 with international charset.
Question: will it be possible to write announcements in the native language of user? for me (russian) in charset 1251 ? cyrrilic is not displayed correctly.
Text of announcement displays in R4 with international charset.
Question: will it be possible to write announcements in the native language of user? for me (russian) in charset 1251 ? cyrrilic is not displayed correctly.