There are bunch of values, then Dafault, InstallLanguage, InstallLanguageFallback, PreviousInstallLanguage
It seems to be related to the language version of windows currently installed and the coresponding values...
But I am curious if there is a complete list that provide the values with the responding language?
0409 = US English
0404 = Traditional Chinese (Not sure if it is Taiwan or Hong Kong, or if they both share the same value)
0411 = Japanese
0804 = Simplified Chinese
I have no idea on the rest...