System32 Folder
The system32 folder and its subfolders contain the core operating system files for your Windows Vista installation:
### (three numeric digits). Localization (language) files for a specific language, corresponding to the number assigned to this folder.
<language-region>. Contains regional versions of some Windows tools. This folder is named using the language-region format. For example, the \Windows\System32\en-US folder contains United States English-language version of Windows tools.
AdvancedInstallers. DLL files used by application installation programs.
Boot. Copies of files located in the \Boot folder.
Branding. Used by computer manufacturers that want to insert custom branding into the operating system.
CatRoot. Catalog files and ...
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