I've been a bit behind on documenting stuff. I've uploaded a few pictures. Here is a quick summary with some info about a few of the pictures:

The first picture is the mill I am going to modify. It is a Model T-981 from Central Machinery. It probably came from Harbor Freight, but I bought it used. It was made in 1988. Still runs well and just needed a few minor adjustments. I went with this over a Bridgeport due to price and because it's a nice size for hobby work.

The second picture is my test setup for the motor. The machine I salvaged most of the parts from had 10 steppers along with 10 drivers and a nice power supply. I cut the stepper chips off of the main board with a Dremel tool. I then just soldered the wires directly on the pins of the controller while it is still on the PCB. This provides me with a decent heat sink and keeps everything together nicely. All of the motors also have connectors on them so it is easy to take things apart as needed for wire routing later on. I drove it with a cheap digital signal generator. The stepper driver was very easy to work with. Just needed to hook the motor up to it, give it power, and a couple resistors to set max current of the motor.

Other pictures show a closeup of the stepper with driver, box of motors belts and toothed pulleys from the CR reader I stripped down, and the board that I cut 4 of the driver ICs off of.