Another important way to secure your system is to use the NTFS file system on your hard disks, which provides the ability to control access to files and folders on a user-by-user basis. This is important not only to protect your personal and corporate files from inappropriate browsing, but also to protect Windows itself. In addition to user-level security, NTFS supports encrypted files, for even greater security.
In addition to increased security, NTFS offers significantly increased reliability over the older FAT16 and FAT32 file systems; lost clusters after a crash or power failure just don't occur with NTFS.
Windows XP Home Edition can also use NTFS, but doesn't provide direct access to its security ...