Confirm that you are logged into the computer itself as thecomputer administrator when you installed Firebird, as well as to run gsec.
Or it could be, that you should reboot the Windows 2000 computer after installing, open Control Panel, and confirmby the Firebird Manager that it is running.
And also check via Control Panel -> Administrative Tools -> Services and ensure that both the Firebird Server and the Firebird Guardian are both running.
Did you install via terminal services? If so, Firebird should be installed while physcially at the computer - not when logged in remotely.
When you installed Firebird, did you select to install the Classic Server or did you install the Super server binary as outlined in the AyaNova v3 Manual for network Firebird configuration?
Is there a firewall running on this Windows 2000 computer? If so you need to enable port 3050
There may have not been a registry entry when Firebird was installed. Uninstall Firebird, reboot, re-log in as administrator, run a registry cleaning utility, reboot, log in as computer administrator, install Firebird, reboot, log in as administrator, confirm Firebird services running, and perform the GSEC commands again.