Hello Melissa,
The bobbin winder is part of the mechanism where you put the bobbin in, it is self winding, thread the machine up as normal, open the slide plate, push the little red button to the right, wind the thread round the presser foot screw a few times, make sure you have selected straight stitch and presser foot up, press on the foot control slowly and it will wind the bobbin, when it is full close the slide plate and the winder will drop down, pull the threads to the back of the machine ready to sew, if you can't turn the balance wheel make sure there is no thread stuck in the bobbin case area.
drivewithken@blueyonder.co.uk, December 2008