The machine that I run the CNC process (from design to realisation) has a very lean version of XP Pro. I have taken out as many Windows components as I can, Networking being the main one. Without networking I don't need Antivirus. I also don't get interruptions and a cold boot takes 35 seconds and a shut down takes 7 (I have a SSD) because I don't have Microdaft and Java and Uncle Tom Cobbley checking for updates I don't want. The system is stable, I want it to stay that way.

I am loath to connect this machine to the internet just to load a demo of a program I may later reject, anyway the program has to run on the machine eventually, so it is a waste of my time even looking at it on another computer.

And one final comment - Search for DesignCad on Amazon and note the price.