Hi,
This link has some schematics for stepper driver, low tech components and cheap, I haven't tried it but someone should, the site owner run this design in many applicarion single axiz or more.
What I can understand is this a very basic but working design meant for people that will try CNC technology but don't spend too much.
It is a freebie but it is not so user friendly instructions.
http://www.cnconabudget.com./freebies.html
Cheap is Good.
SignIT