[FW1] problem in instaling rulebase

[sepideh miralaei]

Hello, I have FW1 on NT system.When I try to install a rulebase on it, it does'nt work and gives the following message: "Unable to open '\Device\FW1':The system can not find the file specified. Failed to get interface list: The system can not find the file specified. Has only loopback (lo) interface,aborting... Failed to load security policy,The system can not find the file specified. Installing security policy on localhost failed."   Does anybody know why it does'nt work?   With regards Sepideh