Reporting Service add new language
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I want create new language pack for reporting services but i have any idea what i should do. I tried to create folder with the shortcut for the language that i want to create and copy from other folders files and put them into this folder but this failed. Another idea was to create a backup for english version and change some phrases but page don't react to that. 
Directory for the folder i try to do is : 
...\Microsoft SQL Server\MSRS10_50.MSSQLSERVER\Reporting Services\ReportManager

Please help.