I have a old mach 3 license and I need to move it to a new computer and I will have to move the license.  i wonder if its easer to re-set up the machine with mach 4 or 3. I am not ready yet to move it but trying to think a head

Your Mach3 license is a file called   Mach1Lic.dat   located in your Mach3 folder. This file can be copied to another computer without problem (you can have more than one instance of the license although there are restrictions on how you can use them).

Tweakie.

thanks guy