Have you got the manual? page 2-5. Look for "driver test.exe" in the folder that you installed Mach to. save a short cut to desk top and run before you open mach3. Using a laptop could be your main problem tho. big no no. some people have got them to work but i understand its a nighmare. I've found with any new process or eqipment its best to start very basic and work up. so have you got a desktop PC that you can use to get it up and running?
That way you would know the drivers and motors worked and it was purely a windows thing.

I'll have a look at your design tommorow

Good luck