Yes its up and running now. Got it doing a test file, the one with lots of movements, especially Z's. Windows XP not the easy set up for a Network but it got done. I did set the pulse Frequency at 25,000 so I would not need to retune the motors and the OEM settings I had in Mach3 work just fine. When the file gets done and it seems to be a lot faster, maybe. I will do the permanent install, thanks guys!! (Gals) Yup its faster, old parallel port running Mach3 40 minutes, new UC400 running same file 24 minutes and the motors are a Lot smoother.