Files that contain the .000 file extension are normally compressed files that contain an index of different CAB files that are used for installation packages with the Windows CE operating system. The 000 files reference a specific program's installer script and tells the computer which files to install during the program installation process.
The .000 file extension is also used for Trend Micro pattern files. These files contain the patterns for different viruses, allowing the computer to locate viruses and other malware that may have infected your computer system.
In some cases the .000 file extension will be used for files created by the Microsoft Doublespace compression software. The files that are compressed with the software are sometimes given the .000 file suffix.
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