We use an old version of Alphacam (2002 I think) which came with a parallel port dongle. Our CNC machine is currently being upgraded with new NUM controller and attached Windows PC. Needless to say the new PC doesn't come with a parallel port, and although in the short term we can carry on using the PC we have always used the time will come when it goes the way of all things.
Our needs are fairly simple and upgrading to the latest version at enormous cost is something we are reluctant to do. Is there any way round the dongle problem?