Not sure I understand the question. If you are trying to set up a new USB Wireless Network Adapter to access a Wireless Router, install the USB adapter's software in the PC. When you run this software, it should include a "Site Monitor" which will search for "Available Networks" to connect to, identified by their SSID (network name). Select the one that relates to your Router and "connect" to it. Once connected, the little icon should have a 'halo' around the top.
The "wired" ethernet cable should be disconnected before establishing the "wireless" connection.