Hello, i'm using a NT workstation 4.0 sp5. My loca C:drive is FAT and i notice that there is no Security tab on the properties dialog box. Is this because it is FAT? Or can this be enabled? If ever it can't be enabled because it is FAT, can it be changed to NTFS? What are the difference of the FAT and NTFS? My system files and NT is on the C:drive(FAT). Please comments. Thanks.