Ответ: Help...Lib or function to replace String
you won't lose latin chars because you can replace only cyrilic.
i'm sure that you have russian layout in windows, so you can write them as yours.
i mean you will replace russian 'с' with your 'з' in *.png file. after that you will still have english 'c' and if your own 'з' that must be mentioned in code as russian 'c'.
sorry if my explaintion doesn't seem very clear.