http://www.thingiverse.com/thing:20398 is the design I intend on using I believe.

I have never messed with Arduino board's and such before, or tried to hook something up like this, but it look's pretty fun. It say's I need 2x NEMA17 Stepper motors, 1x 9g hobby servo (Turnigy TG9e or HXT900 is what it was designed for), and it's hooked up with a Arduino board.

Another person who had made it said they bought a EiBotBoard to make it a lot easier to hook up instead of the Arduino board. It's $50 for that, or I seen some different Arduino boards at Microcenter near me for around $20, what's the main difference I'll be facing?

Also, will these part's work, as long as they are in stock I could just pick them up at this store. And other than these, anything really important I would need with it?
http://www.microcenter.com/product/4..._Stepper_Motor
http://www.microcenter.com/product/4...rvo_Tower_-_9g
http://www.microcenter.com/search/se...px?Ntt=Arduino <----I'm not sure which is the exact one I would need.

Thanks in advance, ask if you need more info.