You don't need a CD to configure a Router, although some users do find the wizard helpful.
Type the Router's IP address into your web browser then, when prompted, the Router's Username/Password, and its configuration pages should open.
If you don't know the Router's IP address, connect a computer to it by ethernet cable, open a Command Prompt window ("Start > Run", type CMD and click OK) and at the prompt, type...
...and press Enter. This will show details of all network adapters in the PC. Look for the *DEFAULT GATEWAY* address of the adapter that's connected to the Router and that is the Router's IP address.