installing new kernel-image

["Rodrigo Agerri (ylbaggar)" <agerri@sk.ehu.es>]

hi everybody

in order to install a new kernel in stable, I did 

apt-get install kernel-image-2.4.18-686

I configured /etc/lilo.conf  keeping the older kernel (2.2.20) such as: 

image=/vmlinuz
 label=linux
 read-only

image=/vmlinuz.old
  label=kernel-2.2.20
  read-only

I then executed lilo and got this output:

Warning: Int 0x13 function 8 and function 0x48 return different head/sector 
geometries for BIOS drive 0x80
Added linux *
Added kernel-2.2.20

if I try to boot with the new kernel, I get kernel panic (I still can boot 
with the old one)

what did i forget?

cheers

rodrigo