Easiest way to install this router is through the setup installation CD comes along with the package. However, you can install and configure this router without the installation CD as well. Installation of WAG120N using the CD is quite self explanatory. All you need to do is to place the Setup CD on to your deskopt/laptop and follow the simple step by step instructions (with pictures) and it will be done in a few minutes, even for a novice user. Please be careful to follow the instructions exactly the same, else might get into some troubles.
If you need more information and know how to install without a CD then visit source :- http://netnlap.com/linksys-wireless-modem-routers/149-wireless-n-home-adsl2-modem-router-wag120n.html