select the adapter and click on Remove. Restart your computer after uninstalling the driver to make the changes effective. (See the Adapter Removal in section 3.8)
6.Of the icons displayed on the right bottom of desktop, click on icon 
stated Wireless Network Connection.
7.When you are using DHCP, just select the AP that you want to connect in the Connect to Wireless Network above.
8.To manually set your IP address, WEP and some other configuration, click on Advanced of the above picutre and then click Configure Available networks on the Wireless Networks Tab . Set the SSID and parameters to be needed to modify and then clicking on OK. The AP that you selected will be displayed on the Preferred Networks.
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