I have been running Mach3 successfully for several years under Windows XP, connected to a small lathe via a box made by Syl. That PC has now died. After reading the various posts on this subject, I got a new PC running Windows 7, 32 bit. Basic problem is that there doesn't appear to be any output to the control box. Mach 3 appears to be working as before. I've run the Driver Test utility and that said everything was OK. Downstream of the parallel port I assume everything is OK (it was fine last week). It just seems that Mach3 isn't talking to the parallel port. Any ideas? One way or another I HAVE to get this thing working!