You should understand before you start that Mach3 runs in openloop mode where the CNC you are used to runs in closed loop mode. What this means - MACH does not use feedback for posioning, it relies on the characterisics of stepper drives for posioning. The anilam control used the glass scales as feedback devices as part of the motion control function. As such you would have to have drives that can function in Step/Direction type control, and the scales would only function as Digital Readouts.
Mach3 is really a hobby level control with many great capabilities, The Anilam control was a commercial production control and the capability of higher percision ans speed. It is like comparing Apples and Pears. They are very similar and you can use them for similar uses, but there are times when you really need a Pear.