Win ME’s System File Protection and 2000 and XP’s Windows File Protection protected about 99% of the files that were installed or upgraded by Windows. Delete, modify, or rename one of the protected files and the file would come right back. In Vista, it’s much harder to delete a system file because of WFP and because all files are owned by the TrustedInstaller service by default. But if you are an Admin-level person, and Take Ownership of a file, add the appropriate ACE, then you can modify, rename, or delete protected resources.”]