Looking for controller board for synchronized stepper motors

Does anyone know where I can find a controller for 3 axises, XYZ with two synchronized stepper motors, (Y axis)? One which will control 1200 in/oz motors. I am building a cnc machine for cutting, shaping and polishing granite countertop. I've modified a Bridgeport milling head so that I can obtain spindle speeds necessary for cutting as well as speeds for polishing. I'm using 1" ballscrews and Hydwin slides to move axises. I'm planning to use 4 of the following motors:


Holding torque-Nm (oz/in) +/- 10% 8.7 (1208)
Rated voltage 2.7
Rated current per phase (amps DC) 6.0
Resistance (Ohms) +/- 10% .45
Induction (mH) +/- 20% typical 5.1
Motor length (mm) 118
Rotor inertia (g-cm^2) 2700
Weight (kg) 3.8


The motors will be belt driven and geared 2:1. Two motors will drive the gantry (X axis, with Z axis), (Z axis approx 200 lbs, X axis total approx 500 lbs) down the Y axis. This should be enough to drive the gantry. I need these motors to be synchronzied. I'm also looking for the right power supply and parrallel interface card. I'm planning on using Gecko drives for the motors, but I need to find the board / interface card which connects the motors to the PC.