I'm trying to get WiFi working on Debian 6.0.3. I managed to find this ( http://wiki.debian.org/iwlwifi ) which is for the hardware I have, but the instructions aren't working.

I added that line it suggests to /etc/apt/sources.list ("deb http://ftp.us.debian.org/debian squeeze main contrib non-free"), saved it, and then ran "sudo aptitude update". (And I'm doing all this with a working wired connection.)

But then when I run:

sudo aptitude install firmware-iwlwifi wireless-tools

I just get:

No candidate version found for firmware-iwlwifi
No candidate version found for firmware-iwlwifi
No packages will be installed, upgraded, or removed.

If you have Debian 6.0.3 that is Debian Squeeze. So your /etc/apt/sources.list should already have a line like that anyway. Post your /etc/apt/sources.list,
also try running 'apt-get update' on the command line then apt-cache search firmware-iwlwifi just to see that everything is up to date. My guess is that your sources.list is misconfigured. Maybe instead of adding a line, you probably should have edited the file & added "non-free" to the existing "deb" line, if it wasn't there already.

Heh, it helps if I actually spell "contrib" properly, "contib" doesn't quite cut it

(I had the wiki page open on a separate computer, so I typed the line instead of copy-pasting like I normally try to do, specifically to avoid exactly this type of issue.)

The first thing I did try was copy-pasting the (*ahem*) "contib non-free" to the older lines I already had in sources.list. Naturally, that didn't work...

But now, the day is saved, thanks to the letter "r"...