A: Both Windows Server 2008 and Windows Server 2008 R2 support multiple languages that can be dynamically switched based on the preference of the administrator. It works in a similar fashion to the way it does in Windows 7 Enterprise and Ultimate Editions.

To enable the multilingual UI, install the relevant language packs which are available for Windows Server 2008 R2 , Windows Server 2008 R2 SP1,  and for Windows Server 2008. See the screen shot below.
2008r2mui_0



After the right language is downloaded, just run the executable and the language pack will be installed. ( See the screen shot below.)
muiadd1_0



Once it’s installed, you can change the language through the Keyboards and Languages tab of the Region and Language control panel applet. ( See the screen shot below.) A logoff is required to make the language change take effect.
muiadd2_0