First of all, make sure your /etc/apt/source.list doesn’t only contain “main” but “main contrib non-free”. And then, update your APT. 1. Update apt-get update 2. Install Build Environment apt-get install build-essential module-assistant wireless-tools module-assistant prepare 3. Install the driver module-assistant auto-install madwifi-source 4. Load it! modprobe ath_pci That’s it! Have fun and happy surfing.