new kernel

I come of upgrade kernel of tomsrtbt distro to add natsemi network card
support.

After replace the  old kernel by the new kernel, i  launch buildit.s, and i
get a new distro. I copied only bzImage to 1/bz2bzImage, i don't change any
other files. The map file doesn't change.

I show when i boot with my new floppy :

--8<---------------cut here---------------start------------->8---
RAMDISK: Couldn't find valid RAM disk image starting at 867.
VFS: Insert root floppy and press ENTER
--8<---------------cut here---------------end--------------->8---

Can you give me some help for my problem, if you see my problem, or a place
where i find a some stuff to solve my problem.

Regards, Ludo.

-- 
Ludo