I just got off the phone with Marge, and then her boss. It will support any standard ATX MB. That means you could get this up to a 3 GHz. CPU and run it really well. Shipping to Texas was 11.50 each. I asked her for a discount for two machines but she said they were selling them 10 at a time with no price break...a totally reasonable attitude for this machine at this price. the only question I had that they couldn't answer is will the machine display from two video sources at once....a pci video card with s video out and the touchscreen. They didn't know the answer but said they will consult with their tech and get him to call me. Very helpful people.