I know this question is over two years old -- but it's still unanswered. I'm challenged with the same prob and I'm getting mad about it There is a tool from MS called "SysOcMgr" which is used together with two INF files to do unattended (de-)installation of Windows extras like games, messenger or stuff like the East Asian Language Support files. But it lacks of a good howto or something else. Anyone here who can explain the right way? Thanks a lot in advance. Regards, ThinkPsy /Edit I did another research and guess what ... I have found the answer. It was burried deep in the MS knowledgebase. I read the article before. But unfortunately MS goes straight to the localized version if there is any available -- and the german translation isn't as detailed as the original one. So here are the steps to do unattended and/or silent installation of the east asian language support files: 1) Change the following registry keys to your needs HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\SourcePath=%YOURDRIVE% (w/o \I386!) HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\ServicePackSourcePath=%YOURDRIVE% (w/o \I386!) HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SourcePath=%YOURDRIVE%\I386 (w/ \I386!) 2) Create text file for unattended installation with the following content: [RegionalSettings] LanguageGroup=7, 8, 9, 10 SystemLocale=0407 UserLocale=0407 InputLocale=0407:00000407 System-, User- and InputLocale of course depends on your requirements, I prefer 0407 for german input method. 3) Type the following into the command prompt or into your script: rundll32.exe shell32,Control_RunDLL intl.cpl,,/f:"%YOURDRIVE%\%YOURTEXTFILE%" Few minutes later you can check the control panel for regional settings and you'll find the [X] in the second tab... 4) Last step is re-editing the reg keys to the previous value. /edit² Found another reg key which has to be edited -- added it to the list above.