You shouldn't need the installation CD, it should just connect to Tiscali and put you online. Plug it in with the Ethernet cable and click here to bring up the config page. If it asks for a username and password, they are both blank by default. In the main screen, there should be a section called Broadband Connection. Press the Connect button and see if it connects. You might also need your connection username and password, but Tiscali should have sent you these if you need them.