Well Jake it sounds pretty complicated. I'll go with my set-up and see how it works. My computer and networking background is not ready for something as complex as PLC. Sounds very interesting though!
Were you using any Siemens controllers? Better check for the Stuxnet worm. I hear they were having a bit of a problem with that in Iran. What an amazing piece of engineering behind the Stuxnet worm. There is a good story about it in the New York Times on line.