Thanks everyone for the help.  We have loved just about everything about Mach 4 and the pmdx - literally the only thing that I thought I'd add to improve is an undo button for the tool offset dialogue box (sometimes you accidentally click input + instead of input).  It's been a great program.

For some reason we couldn't get the other steppers we had to hold position?  We still dont understand why.  In any event the problem was solved with the new motors and a setting change.

Thanks everyone for your feedback; it has been a great help!