cobbler to create a distribution from the command line is as follows:
cobbler distro add --name=string--kernel=path--initrd=path
--name=string switch is a label used to differentiate one distro choice from another (for example, rhel5server)
--kernel=path switch specifies the path to the kernel image file
--initrd=path switch specifies the path to the initial ramdisk (initrd) image file.