Adding/Removing Unified Messaging Language Packs: Setup.com /AddUmLanguagePack: [/SourceDir:] Setup.com /RemoveUmLanguagePack: --Add/Remove UM Language Pack Required Parameters-- /AddUmLanguagePack - Adds the language packs for the specified cultures. /RemoveUmLanguagePack - Removes the installed lanugage packs. --Add UM Language Pack Optional Parameter-- [/SourceDir,/s] - Location for the unified messaging language pack