As long as the OOPic can output 5V TTL signals from its pins, pretty much any stepper driver will interface with it. The driver can't tel the difference between a square wave from an ATmega chip or an OOPic.
Picking a stepper motor that matches the driver is a bit different. There are drivers suited for certain motors.
If you want more help, give us some more information on the size of the stepper you want to use. The torque, voltage, current requirements/limits would all be nice.