Choose your equipment wisely. There are many types of wireless routers, and they are not all created equal. Some of the lower end wireless routers are very basic, and will limit your home network to speed of 56 megabits per second (Mbps.) This is really not a very fast speed. If your access points will be very far apart, consider getting a router with ultra-range abilities, or a dual-band router. Also, while you're at the store, be sure to pick up one wireless access point for each computer you intend to connect to your network.
# 2
Remove your DSL or cable modem from the power supply.
# 3
Remove the ethernet cable which connects your DSL or cable modem to your computer from the computer, but leave it plugged into the back of your modem. This cable looks something like a phone cord on the ends, but with much larger connectors and a larger, round cable. Do not remove the phone cord from the modem which is plugged into the telephone jack on your wall.
# 4
Connect the loose end of the ethernet cable to the internet port on the back of your router. This port should be clearly marked, and will probably be a different color than the other ports.
# 5
Reconnect your modem to the power source. To protect it, plug it into the same surge protector which guards your computer.
# 6
Plug the ethernet cable which came with your router into the ethernet connector on the network card on the back of your computer. Then plug the other end into one of the ethernet network ports on the back of the router.
# 7
Plug the router's power cord into the power supply. This device should also be protected by a surge protector. If you run out of plugs, it is well worth ten or twenty dollars to invest in a second surge protector.
# 8
Check the lights on the front or top of your router. The power light should be on, as well as the internet light, the wireless light, the security light, and a light for one of your ethernet network connections. Check to see if any lights are off, flashing, or red or amber in color. This will indicate that the router is having a problem. If any lights are not on as they should be, check your cable connections to ensure that they are securely connected. Repeat the setup steps if necessary.
# 9
Install the software provided by your wireless router's manufacturer.
Read more: How to Install a Wireless Router for Beginners | eHow.com http://www.ehow.com/how_4425657_install-wireless-router-beginners.html#ixzz1OmPYMbyB