Not sure if this will really help you but I have been working on setting up PacketFence at my school. It is one of those back-burner project of mine that I have not completed yet.
I have posted the link below to my blog that has instructions on how it install the server operating system, install PacketFence, and it's initial configuration.
Spencer's IT Tips & Tidbits: PacketFence 3.5.1 / 3.6.0 Install
I started another post on how to set PacketFence up, but have not finished it because I got move to a different school and couldn't take the equipment I was using with me.