I have installed 12.04 and am attempting to update the wireless drivers (I have a Dell Insiron 6400), but it keeps asking for an installation CD that I do not have. How do I force it to stop asking for the CD and go to the network? The commands I am running are:
~$ sudo apt-get update
~$ sudo apt-get install firmware-b43-installer
~$ sudo apt-get remove bcmwl-kernel-source
~$ sudo reboot
It asks for the Cd at step 2