Hi,

Ok first thing to ask is what operating system are you using. If it's 64bit then Mach3 driver doesn't work with 64bit.

If 32 bit and driver installed correctly then it will most likely simply be that you don't have the correct Motor output settings and input settings for E/stop,limtis etc.
To get these will take a little detective work by looking at the boards inside to work out what you have and what goes to where.
If you take some good pictures of the boards and drives etc we will more than likely be able to work them out.