I need some help about booting NetBSD on my powerbook.

I installed the filesystem and the kernel on a partiton. I still have 2
MacOS partitions on the same disk. Now I want to boot off the kernel
that is on the disk.

As I understood, I need ofwboot.xcf, and I will tell him to boot from
the place where the kernel is.

Where could I install ofwboot.xcf?
- on a raw floppy: how do I do this? I need bootxx too, isn't it? I know
how to overwrite a floppy with one file, but I don't know how it works
with 2 files
- on a MS-DOS floppy: I tried this, but how do I explain ofwboot.xcf
where is my kernel? It seems to attempt to get it from a wrong location.

-- 
Emmanuel Dreyfus.
"Le 80x86 n'est pas si complexe - il n'a simplement pas de sens"
(Mike Johnson, responsable de la conception x86 chez AMD) 
p99dreyf@criens.u-psud.fr