Here is a first contribution complete with easy to implement BASIC programming to control a stepper. All you need to follow the programming is Microsoft Excel. Don't dismiss the programming part out of hand. It is an excellent way to learn exactly how things work and it isn't hard to follow. I wrote my own controller software for the plotter I built back in the 80's.
Understanding various types of Stepper Motors
Controlling it through Parallel Port
It's by a first year university student and explains things fairly well. The file is a zip file which I have renamed to .zap to avoid download filter problems. If you download it then just rename it to .zip and then extract it or just open it. It will open in Wordpad just fine.