Master5 includes a test utility. Or you can download a G-code and try it with TurboCNC, or use the jog feature at any program. is obvious that you do not need to attach te stepper to any real mechanics to see how moves.
Just send the codes lpt away and look if the stepper moves and if the direction is ok. Doing this way you have as a bonus that you start to practise 'the real way'
Hope it helps
PS: upload pictures, upload schematics, upload all you can