The installation CD is not necessary for the actual router installation. All of the settings for the router can be accessed and changed from the router's configuration page.
Connect one of your computers to the router using an Ethernet cable and one of the 4 LAN ports on the back of the router itself. Once connected and powered up, open a web browser on your computer. You will not get online yet, but you should be able to enter an address in the Address Bar of the browser. In this bar, type in http://192.168.11.1 and press Enter. From here, you should be able to access the router setup page. Run the Setup Wizard, on the left side of the screen, and it should take care of the basics for you.
