Hi all I have just bought a cnc router which has been running on Mach3 but has no computer if i buy the mach3 program do i need to put all the settings into my computer or will they be in the cnc board in the machine its a china exported machine so that's the board in it cheers for the help

Do not buy the mach3 software yet.

The settings will not be on the board within your router.
You will need to enter your settings (parameters) in the Mach installation on your new computer. Depending on the cnc board within your router there may be additional settings which relate to a motion controller.

If you are starting from scratch then bear in mind that Mach3 is now obsolescent and Mach4 may be a better choice.
The installation manual for Mach4 can be found here;   https://www.machsupport.com/wp-content/uploads/2014/05/Mach4%20Installation%20Manual.pdf

And the Mach3 installation here;  https://www.machsupport.com/wp-content/uploads/2013/02/Mach3Mill_Install_Config.pdf

Once you have your router working then consider buying the Mach software.


Tweakie.

Cheers for that you are right mach4 may be way to go