Thanks Mr.Aratti.

I have read the artical. It seem like almost all the stepper circuit have five or six conection. Four to motor, one positive and one negative. Mind is only four wire. If I connect it to a L293D or L298 H bridge circuit then how could I supply positive and negative voltage. This is the thing that make me a bit confuse.
Need more explanation from forum members.

Hope you can spend abit of your time for a little bit stupid question.

Thanks.