Well, I have a few questions regarding Mach 3 and the future version, Mach 4. When/will Art make Mach 3 or 4 capable of controlling through USB ver 2.0 instead of the printer port? This seems like such capable and widely-used software that Art would be front & center on upgrading it to be most useful and "friendly" to his customers (printer port or parallel port technology is dead...just like vinyl and 8-tracks). Something like a LinkMotion "print job" to USB would be amazing for those of us looking to make a blisteringly fast machine. No more 45 mhz limits on sending/receiving information. I am NOT a LinkMotion fan, it just seems like a really neat solution, a software driver versus hardware. My other question is why not a DOS version or something less likely to have MS "hijacking" the PC we're using to control our machine. I'm sure Bill Gates is a really nice person and all, but his software is only good for MS spying, needing fixing, having hackers zombify your rig & the average lay-person who is not very computer savvy...truly point & click...so long as you don't mind "bugs" and "errors"...not really what I want when I'm machining an expensive piece of material...