tu opis po ang. jak to zrobic:
Extract t9xxxxldb.dll and t9imeres.dll.0xxx.mui of your language to \Windows on the phone.
Add appropriate values to [HKLM\T9 Input Method\LDBs] and [HKLM\T9 Input Method\MUI\Languages] and restart the phone.
Czech T9 example:
Extract T9CzechLdb.dll and T9ImeRes.Dll0405.mui from t9languages.zip to \Windows
[HKEY_LOCAL_MACHINE\T9 Input Method\LDBs], add string value '0405' with data 'T9CzechLdb.dll'
[HKEY_LOCAL_MACHINE\T9 Input Method\MUI\Languages], add '0405' to the list of 'Available', so the data will be '0409,0419,0405'
Restart the phone.