I have looked at the web site, and I am afraid it does not say alot. I will bow to Overloaded's view if he has had experience with them.
I am afraid from my point of view that - if you are a beginner - then they are far too complex for you. The traditional system (which I would recommend to a learner) is a computer - and you are having a bit of difficulty with that so far, a set of drivers (which normally come about £30 per axis) and stepper motors. I bought mine for £40 each from Arc Euro Trade.
I cannot remember now whether you were doing a lathe or a miller.
The advantage of these simple units is that, to test them, you can set up one, run it, GCode it etc etc. When you know that is correct, then the second and third axis are only more of the same. There is a three wire connection from your computer to your driver and a four wire connection from your driver to your motor. Nothing could be much simpler and if you can't get it to work, your are wasting your time.
As you advance, you put all your drivers in one box - may be with a 25 pin breakout board, and you do all the wiring in the box - power supplies, fuses etc. All you then have to wire is the 25 pin lead to the box (buy a printer cable) and then wire each motor to its driver - I used flat 10amp loudspeaker cable (four core) and 4 pin din lockable plugs and sockets.
The whole system is easy to see, easy to test, and if any single part goes wrong it is easy to identify and replace. Since all the parts are standard, you can swap them about to fault find quite easily.
The motors you identified listed about 6 different ways of wiring to them - fine, but you will never use them, so why pay for them. They listed in built drivers - fine, but if the motor or the driver goes, then it is all to replace, not just the part that has failed.
I built my system in three days, from receiving the motors and driver cards - including working out some way to drive the axis from the motors and for £200 I had a three axis CNC system (my lathe has a milling head). I later blew the drivers ( I think by connecting the power supply wrongly) but at least only the three drivers needed replacement. The system still works. I am adding limit switches and home switches etc etc as I feel the need.
Take my tip - keep it simple until you have it up and running. You could do with some sort of breaxout board to test your PCMCIA - printer port adaptor. You can test this without a machine attached, and then go from there bit by bit.
If you already have the motors, fair enough - are they powerful enough to do the work !!