Is therer a was to convert english language into german language on windows xp operating system?

I don麓t mean how to change regional setting and options. How can I change the whole operating system from english into german language? Is there a language pack to download for win xp pro? Would be glad to get some answers...thank youIs therer a was to convert english language into german language on windows xp operating system?
I think you have to install the German version of Windows.

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