hello

im new in this stepper driver or this electricity world, im a chemical engineering studend, and i have filling in love with some stuff like 3D printer and some like that, and when i see that price really kill me so i decide to DIY, and i have dificult for chosing the right stepper driver for my DIY cnc router.
i have 2 option, pyro stepper driver or reprap stepper driver v1.2 .

the pyro link is here
DIY Stepper Controller - Hardware | PyroElectro - News, Projects & Tutorials

and the reprap link is here
http://reprap.org/wiki/Stepper_Motor_Driver_1_2

and how to wiring pyro to arduino uno, can it handle for 4 stepper motor (4 axis) ? is that need only step,dir,gnd wiring to arduino uno?
any sugest? the different in my view is the part, the diode for reprap is really hard to find in my country.
(sorry for my english)

thanks
ali