Whenever I've edited the menu.list from an ISO editor get that
initramfs b0rk. Hence I've been saying to people you need to build it
yourself if you want to permanently change the boot command line.
http://webconverger.org/develop/
I've just uploaded Webc 3.1 mini, so you could give that a try.
http://download.webconverger.com/mini/
Kind regards,