Mesa cards are an excellent way to go. I refitted a Denford NovaTurn to Yaskawa AC servos using a iBOB2 which I designed, AMD GizmoSphere, Mesa 6i25 and a 7i77. Search for my work. Running PathPilot. I will be posting work on a Infimatic NC 200 refit. See some of my work: http://www.cnczone.com/forums/bencht...754-cnc-3.html , Denford Software & Machines ? View topic - NovaTurn Servo retrofit AMD Gizmosphere iBOB2 PCIe x1 , Hope this helps, Iron-Man