Remove the BT 1060 wireless card and all the software including the drivers for the 1060 wireless card..... your right when say that they are causing conflicts with Dells built in wireless card....
Next, disable the onboard LAN and make sure that the wireless connection is enabled and that the Windows firewall is also disabled.
After that enter the routers web config page and make sure that the wireless part is enabled and you know what the encryption key is (if one has been set).
Now goto Start > Run type cmd and hit enter. Now type ipconfig /release (hit Enter), then ipconfig /renew (hit Enter).