is your wired conenction working with the internet?

If your wired connection is working with the internet, it means the configuration on you router is correct, so stop worrying about Qtel setup.

If your problem is with the wireless only, focus on the wireless settings on the router. You should be able to see the wireless tab on your router setup page, better to change the SSID, choose chan1 or 6 or 11. Setup your password for security if you like.

Reconnect on your wireless computer.