Input_locale can be one of two values: To use the default input locale for a language, you can specify the language identifier. For example, to use the default keyboard for English (United States) that corresponds with the QWERTY keyboard, you can specify the value en-US. Specify the locale ID and keyboard layout hexadecimal values. For example, for en-US, use 0409:00000409. The first value (0409) is the locale ID that represents the input language and the second value (00000409) is the keyboard layout value. So en-US should be OK...