run levels

Is it possible to set up more run levels than the seven provided by SuSE? As far as I can tell, I can add more by setting up more directories in /etc/init.d, although I probably wouldn't be able to set them up in yast. Am I right? Will grub allow me to switch to a specific run level from the boot menu? Failing that, is /etc/boot.local a good place to set up a script for calling one of these additional run levels? -- The opposite of a profound truth may well be another profound truth. -- Bohr