1. Connect the computer to the router using the Ethernet cable so that you can access the router’s set up details. This is done by typing 192.168.x.y into a browser address bar window. The values of x and y depend upon the make of router. If you don’t know the values, in a Run window (Windows key+R), type cmd /k ipconfig (note the two spaces) and press Enter. Make a note of the Default Gateway address and enter it into the browser window. When asked for the username and password, type the default values for your router, possibly admin and admin. Once you have connected go through the sections until you find one where you can enter your ISP details, i.e. the Username and Password given to you by your ISP.
2. To set up wireless access, look for a section named wireless or similar wording and find an SSID name and a Security key. Change the SSID to something more meaningful to you but don‘t use obvious names, like your name. Also, if the key type is set to WEP, change it to the more secure WPA, unless computers with older WEP-type adapters want to connect. Now change the Security key and make a note of it and the SSID.
3. Your router may have a section that allows you to backup and restore its configuration details. If so, make a backup to enable you to easily restore the set up in the event of having to reset the router to factory settings.
4. The SSID and key are needed for any wireless computer to connect to a router. The software varies from manufacturer to manufacturer, but generally it involves right-clicking the wireless network adapter’s icon in the Notification Area (bottom right of screen) and following the prompts to create the connection.
If the adapter status shows “Not Connected” message then, you need to go to ‘View Available Networks’ and then click on ‘Connect’ after selecting a wireless network.
Some wireless router installation problems would be resolved after router reconfiguring.
If the network’s name that you want to connect does not appear in this list or you are unable to connect, you might try to re-configure the router to server connection using the configuration manual of your router.
Hope this information helps you.