I deleted Madwifi because it said it needed the Kernel 2.6.39 and it wouldn't let me update anything else with pacman -Syu, I decided to delete it and ran the Sync and Upgrade again and it found the new kernel that was it's dependency. So now, I'm trying to get it back but I can't find it in the repositories. It doesn't whether or not I can connect *After all, I'm typing this* but when Arch Linux starts up, for networking it says "BKGD" which was different before I deleted it. I also read somewhere that madwifi is obsolete, but I'm not sure if that's true. Any way, do I need the package? Is it essential? Another thing, how do I ignore certain package upgrades so that I can work around those dependencies?

kernel26 does NOT require madwifi.

madwifi : https://aur.archlinux.org/packages.php?ID=49710

requires a 2.6.39 kernel.

It would not install with pacman because it is not in the tree, it is in AUR.

You have to build it yourself.

Do I need it? If I didn't download it from pacman, was it in the base-devel package during installation?

No. It is not a dependency of the base-devel meta-package.

It is not in [core], [extra], [community], or [testing].

It is in AUR. You must have installed a package from AUR that required it.

Do you have an Atheros wireless chipset?

Yes, I do have Atheros, I have Ath_5k. Is that why? Actually, I do remember installing... the Wireless Setup guide said to do so, or that was one of the options.