This is a 4-wire bipolar stepper motor. In the motor connector the first coil is wires 1 and 2, the second coil wires 3 and 4. Coils have 10 Ohms resistance.
The four pin arrangement with H-Bridge should work. (No H-bride available now to test, but with two wires it jump back and forth - will repost if H-bridge fails).
Test code: Use the Arduino IDE built-in one rotation test code.
Graphical explanation of stepper motor operation: http://www.imagesco.com/articles/picstepper/02.html
Reson for his post: couldn't comment on the old forum post and no easily available info on this steppermotor.