I checked the file table and the file NiFltr.sys exists there and it has NiFltr.sys for the Component and Filename.
I checked the Directory Table, and the installation directory for the file C:\WINNT\System32\drivers is listed as: Directory -Drivers, Directory_Parent - SystemFolder, DefaultDir - drivers.
I checked the Components and NiFltr.sys is there also with the Destination set to: {DRIVERS}[SystemFolder]drivers and the Destination Permissions set to 0.
Any other suggestions? And once again, thanx for the help.