configuring? kernel and header source

[ChadDavis <chadmichaeldavis@gmail.com>]

Hello.

I'm trying to install a nvidia driver and have run into some issues
with getting the installer to locate my header sources.

I'm running etch if it matters.

I've installed the linux-source and linux-headers packages for my
kernel with apt-get.  Yet, the installer still says it can't find a
header file that it needs and suggest that I need to "configure" my
source.  What does this mean?  Is there some configuration tasks to be
done with installing source?  I couldn't find any documentation of
such.