Hmmm,
Sorry, I am not familiar with that kinda thing.
I can tell you that if your application isn't too server intensive, you can use a desktop PC (or two or three, but by then, you could've purchaced a medium duty headless sever) as a server. That is what I did, but the network was only about a dozen terminals. It worked pretty good, actually. The server was more like a snap server though, it was used to store documents and records and stuff. I did that because that machine was the only one on site with Windows 2000, and the rest of them were 98's and ME's. The objective was to secure the data, and protect it. I just set the terminals up to use the 2K machine as a network drive. Still working great.
However, if you application (with 70 or so PC's) is server intensive, get a server (or attatch an air conditioner to the side of the machine acting as a server to keep it from "letting the magic smoke out"

.
Sorry I couldn't help ya with the imaging thing, but good luck! Just keep asking in this forum, somebody will be able to asnwer question, I'm sure.
Take it easy, Hope I was of some help...
--OR--
Thanks for the help...
--Rich