Looking closer at the page referenced above, someone wrote:
If you have a wired connection, make sure you have the universe repositories enabled and install synaptic package manager. Once you have synaptic installed search for firmware-b43-installer, right-click to mark it for installation, then click apply. After the packages have downloaded, open the install terminal, and watch to see if the firmware is installed properly. If the firmware installed properly all you should have to do is reboot, and once at the desktop you should have working wireless.
So, where do I go to find the universe repositories, and how do I enable them once found? After I do that, I apparently need to install synaptic, but as a newbie, I don't know where that would live either.
I just did a Google search and found this video: http://www.youtube.com/watch?v=nA5JxO-aV1s
- but my desktop does not have a software sources icon. So I looked at the menu, found it,and perhaps enabled too many things as there is a lot of downloading going on. I searched for synaptic there, but there was no response.