Any one used IntFiltr.exe???

This damn thing keeps saying (against DevObj Name) "NO DEVICE INFO
AVAILABLE" for all devices except

1394 Host - \Device\00000069
IEEE 1394 IP Network Device - \Device\0000006a
Processor (4 entries) - \Device\00000037 \Device\00000038 \Device
\00000039 \Device\0000003a
ACPI Fixed feature button - \Device\0000003f

And there are almost hundred other devices which says "NO DEVICE INFO
AVAILABLE"

And I am not able to find any information in this WORLD WIDE WEB

What in the world I should do in order for this Microsoft tool to find
DevObj names and be useful for me

Thanks
Arun