The xml is the file that holds all your config settings.
It is located in the main Mach3 folder and will have the name of the profile you are using so if you open Mach you will see at the lower left of the main page the name of the profile. Look in the Mach3 folder for a file with that name and a xml extension, copy it to your desktop and rename the copy to EasyChannel.xml and then use the additional options button on the reply page to attach the renamed fille.
Hood