You should have the CommuniGate Server installed and running before you install the CommuniGate File module. Use the CommuniGate Installer to place the CommuniGate File module file into the Modules folder inside the CommuniGate Folder. Restart the CommuniGate Server.
After the module was installed and the CommuniGate Server has been restarted, login as the Postmaster and check that the File item appears in the Server menu. One icon should appear in the Monitors section, one - in the Queue section.