Do your editing stations have ethernet? Specifically Gigabit speed? Apple computers, afaik, use Gigabit speed ethernet if they have an ethernet port.
You will likely need Gigabit speed router/switch/hub as well to hook up devices to each other. These are bit more expensive than the usual consumer level - but the consumer level routers/switch/hubs run at 1/10 the speed.
Please forgive the vagueness of the terms used, but it's been a while since I researched this for my own needs. I got what I needed, and then decided I needed the room in my brain for other things... but.... I am photographer that deals in files that are sometimes 1 or 2 GB in size. Transferring across my network is measured in seconds.
It was dead easy to set up. Ethernet cable is cheap. Good Cat5 is usually good enough, but you may need Cat5E. Cable lengths can be long, so you have flexibility on where you physically locate your stations.
If all your systems are Macs, you can use Screen Sharing across the network... for instance, you don't know what the file is called and you don't want to get up and look at the station? You can Screen Share to the other station and fire up the application and look at the Recent Files.... for example.
If you go this route get better advice than I can give... but if I can set it up I'm sure you can. It has also been rock solid for me.