I have recently had to change computers running mach3.  I now need to load mach3 on a different computer using the same license number as before.  Can anyone help

Make a copy of your Mach1Lic.dat license file and your <profile>.xml settings file.

Download Mach3 version .062 from here: ftp://anonymous:guest@ftp.machsupport.com/Mach3/Mach3Version3.043.062.exe
Install Mach3 on your new PC then copy your original license and settings files to the new Mach3 folder.
If you were using any special Screen sets or Macro's these also need to be copied across to your new Mach3 folder.

Tweakie.

thanks Tweakie that worked perfectly.