A router is a device that allows you to set up more than one computer to one Internet connection. According to Webopedia, routers are the intermediary between a local area network, or LAN, and another LAN or an ISP. They keep the information flowing along the network. Routers can be either wired or wireless, depending on your needs. A wired router connects to your laptop computer with an Ethernet cable while a wireless router connects to your computer with a wireless Internet card.
Plug your router into a wall outlet.
Plug your router into the DSL or cable modem using the Ethernet cable. Be sure to plug it into the WAN port on the router and not the LAN ports.
Plug your laptop computer into the router using the Ethernet cable. Plug the Ethernet cable into a LAN port on the router and your Ethernet port on your computer. If it is a wireless router you only need to plug it in for the initial setup.
Open your Internet browser and go online.
Type in the address of the router's website. It will usually be an ISP number in this format, http://000.000.0.0, with the zero's replaced by other numbers. This information should be included with your router.
Enter the default user name and password that came with your router. Press "OK."
Change the name of the router and set a password if it is wireless. You may also be able to set your level of security.
Turn on your wireless Internet card if your router is wireless. Tune the Wi-Fi card to the router's name and unplug the router from the computer.
If your router is wired you do not need to complete any steps beyond step 4.