Stepper motor

Hello, I own a stepper motor : pm35 048 hpl2. I red some discussion about this motor in here but I couldnt et an answer to my question.

Is there any why to connect the wires to make the unipolar a biopolar motor ?

I am asking it cuz I am working with the easydrive stepper controller : http://www.schmalzhaus.com/EasyDriver/.

Thank you.

datasheet: http://www.eminebea.com/content/html/en/motor_list/pm_motor/pdf/pm35s048.pdf

some more information that I didnt fully understand: http://www.eminebea.com/content/html/en/engineering/motors/pm_motor/selection_pm/drivecircuit.shtml

Thank you.