If you want it to run as a livecd on a usb stick, then you'll need to copy the boot folder from the livecd to a usb stick (as root)
Assuming you have the iso file on a harddisk (linux)

#mkdir /home/yourusername/test
#mount -t iso9660 -o loop,ro /home/yourusername/antiX-M7.iso /home/yourusername/antiX/test

Then copy all those files to your usb stick.