Most "language packs" (Multilingual User Interface or MUI) were designed to be installed on top of the English version of Windows XP Professional to add other languages.
These provide a translated version of the most common menus and dialogs but require a specific "base language" to be already installed. Where to Download Windows XP SP3 English windows xp service pack 3 english language pack download
For those needing the full English Service Pack 3 update, it is available on the Internet Archive . This file is a cumulative update that includes all previous security fixes. Most "language packs" (Multilingual User Interface or MUI)