gedit /boot/grub/menu.lst
in it edit the kernel line to
title Ubuntu 7.10, kernel 2.6.22-14-generic
root (hd0,2)
kernel /boot/vmlinuz-2.6.22-14-generic root=UUID=2946bc29-bb7c-466c-823e-86394c27eed3 ro quiet splash fr_FR i8042.reset
initrd /boot/initrd.img-2.6.22-14-generic
quiet
Add the bold