41fb3f57__Packs_in_Win_XP_and_Win_Vista__1
[0] . [2] The Multilingual User Interface Pack only supports upgrades from English versions in case of Windows XP. [3] All upgrades must be performed in the same language in case of Windows Vista. Vista Home Basic (EN)-> Vista Ultimate (JA) not allowed. [1] 
Upgrades
Creative Tester: Uncovering Myths about Globalization testing- MUI Packs in Win XP and Win Vista
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