Download
first download language pack from this link
http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=3411
Extracting the Package
to extract the package open command prompt and navigate to the folder that has the package and then type in
ServerLanguagePack.exe /extract:c:\FolderName
where FolderName is where you want the extracted files to be
Modify package configurations
we need to modify package configuration file to skip the check for windows 2008
to do that
navigate to
c:\FolderName\Files\Setup\
and open this file Config.xml
1: <Configuration>
2: <Setting Id="OSERVERLPK" Value="1"/>
3: <Logging Type="verbose" Path="%temp%" Template="SharePoint 2010 Products Language Pack Setup(*).log"/>
4: <Setting Id=”AllowWindowsClientInstall” Value=”True”/>
5: </Configuration>
I have added the highlighted line to the file and saved it.
Install the package
now go to c:\FolderName\setup.exe and insatll it
Configurations wizard
in the end run sharepoint 2010 configurations wizard in the end.