control stepping motor

[iop1234]

i use visual basic.net to control motor. i have some problems of making motor that are rotation 9 degree. after that the stepping motor stand before continue roration 40 times. each time is 9 degree.
i use stepping motor and use visual basic.net
someones can give the command and the way to control

 

[bajgik]

the best way is to integrate a microcontroller in between the pc and the motor: Stepper Motor Control Tutorials