I have followed Chuck Fellow's route to convert my Rong Fu30 to cnc. Now that I have the mechanical side of the conversion completed (?) I now have to get programs working. I have an older version of Alibre Design 11.2, that the new owners no longer support, If I can revive my old computer (Windows XP system) this program should do all that I need.......I intend to run this CAD program in conjunction with Mach 3. I have 4 axis Stepperonline motors, drivers, board etc with 439oz dual shaft stepper motors. I am operating via a parallel port and this complicates the issue. Failing resurrection of Alibre Design 11.2 I will buy Alibre Atom 3D. Alibre Atom 3D needs Windows 7, 8 or 10 (62 bit) to operate. Mach 3 is having difficulties operating with Windows 10 (believe this is to do with parallel port applications) and is not supported for use on laptops. Mach 3 is compatible with the 32 bit version of Windows 2000, Windows XP, Windows Vista or Windows 7 but not the 64 bit version. I believe (???) that if I run a smooth stepper board it eliminates the parallel port problems (???). Is this the board in my system that tells the drivers/motors to turn on/off, clockwise/anticlockwise ??? Therefore do I run the old Alibre Design 11.2 (Windows XP system) with Mach 3 and replace my board with a smooth stepper or: Run Alibre Atom 3D (Windows 8) with Mach 3 and replace my board with a smooth stepper ??? Please let me know your understanding/experience with these programs...........or let me know what combinations that you are running that are compatible with my Stepperonline/parallel port setup.