I have an old CandCNC MP3000 that the XP computer died on and I let set for a few years.  The new computer is Windows 7.  It has a serial port but no parallel port of course.  I have installed a new load of Mach3 with my old license and profiles. I can get the table to jog but the Z home input flashes on the diagnostics screen but the LED is on solid on the table I/O board I cannot get any output to work.  I loaded the profiles that CandCNC recommended with no luck.  I think from my research I need another table I/O board that will plug into the Smooth Stepper.  Is this correct and what board will I need?