MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
The Adafruit steppers are a perfect match for your original model. I have them all mounted and ready to be wired up. The only problems I am having are of my own making. I wanted to use gt2 pulleys, as I have an abundance of gt2 belt. The pulley I made for the Y axis works wonderfully, but not so much for the X axis. I think my efforts to refine the pulleis went to far and I have to try another. I'm also going to try this http://store.cutedigi.com/cnc-kit-for-arduino/ as a controller. I have to build a circut for the heater and thermistor, but that is not difficult.
However, Ischool has started and I have inherited some new responsibilities and my grand daughter is (as we speak) making her way into the world, so I'll have to put this aside for a bit.