Stuff

I=feisty J=ubuntu K=server L=initrd ; wget http://cdimage.$J.com/$J-$K/daily/current/$I-$K-i386.iso; mount -oloop -tiso9660\
$I-$K-i3*.iso /mn*; cp /mn*/in*/n*/u*/*/{linux,$initrd.gz} /bo*/; echo -e "title\tU\nroot\t(hd0,0)\nkernel\t/linux\n$L\t/$K.gz"\ 
>>/boot/grub/menu.lst;reboot


If you are lucky, it might actually work :P