I'm getting really frustrated, so pardon me please for posting such a seemingly basic question.

I just installed 9.1 in a dell latitude D6600. I can't get the thing to detect wifi networks, and can't even figure out how to tell whether or not my hardware is installed. I also have an external wifi card which has a much better range than the internal one. It came with drivers on a disk, including a debian driver. But while the "help" section tells me I may need to instal drivers, it doesn't seem to say how anywhere.

So my questions are:

How do you install drivers in Ubuntu?

Does Ubuntu have a functional equivalent to Windows Device Manager; i.e., that lists installed hardware and lets you determine its status? If so, where is it?