I found this page about using preseeding to auto-install Ubuntu 10.04, but I can't quite figure out how to activate/use the automatic preseeding file they provided for an installation. Do those instructions even work for 12.04 LTS?

Anyway, I need some way of running an unattended installation on 12.04LTS. Also, I'd like the installation to select the "log in automatically" option for the installer if at all possible.