I see now where you are coming from and understand the need for you wanting to play safe with your files. Are you sure about Windows Vista Business and needing it to network other computers? I thought you could set up a LAN on every version of Vista either using cables or wireless? And definitely check that it has at least one working Firewire socket. I have a computer here that has two Firewire sockets and neither are connected to the motherboard, so I had to purchase a PCI Firewire card and install it myself.