Sounds like a beefy bipolar motor, you want something like the A4988 but for more current. Have you looked on ebay for 3 and 4 axis stepper controller boards, I'm sure there have been something suitable there in the past. You want a chopper/PWM based driver that will run off 24 to 40V or so for such an application (otherwise those motors will run sooooo sllllooooooowwwlllyyyy...)
You'll also need to generate the control signals - heard of OpenCNC?