Advice on stepper motor

Once again, thanks for replies, really appreciated!

This stepper motor is for a laserharp, as Ive already made one, but now I want to make a frameless with much more beams this is good for me.
And as Im playing with the stepper motor, I hope Ill learn in the future to build my CNC.

This is my first year in the univeristy, and I really love what Im Learning over there. This is a new World for me I must say!

Ive ordered the top step motor, waiting for it to arrive :smiley:

I also need to order the A3977 chip, but could you tell me why I should order it? What is the difference between this one and Darlington transistor Array and H-bridge. Beause maybe I am able to get the H-bridge from school.

However is this the correct one?
http://www.ebay.com/itm/A3977-A3977SEDT-A3977SEDTR-A3977SEDTR-T-Motor-Driver-/120732834243?pt=LH_DefaultDomain_0&hash=item1c1c3cd9c3

Cheers!