I,m a retired Broadcasting Consultant, with a background in electronics, but with a very limited experience of VB programming. My main interest at the moment is interfacing my PC with a small milling machine's rotary table stepper motor. There seems to be very little written material available describing the use of a VB porgramme to control stepper motors. I have devised a simple proceedure in VB6, to calculate the number of pulses to be fed to the motors, but would be interested in the calls in VB6 to feed out those pulses to the motor, using a Vellleman USB Interface Card, and to retrieve feedback info from the stepper. Can anyone help please?