Upgrading Mac-side kernel for BootX

[William C Brennan <brennan@netaxs.com>]

Folks,

Okay, I'm ready to take the plunge and upgrade my kernel (first to 
the most recent potato, then probably to woody), but I'm a fairly 
naive user, so I could use a little help.

I've got an OldWorld Mac (PowerMac 7200) which means I'm using BootX 
(ver 1.2.2) by necessity.  BootX requires the Linux kernel to be 
saved as a file on a Mac partition.

My question is: How do I obtain and write a kernel into a Mac file 
partition?  I do have a shared partition (HFS, visible via MacOS or 
Linux) which I can use to transfer data between the 2 operating 
systems.  If someone could point me to a document, or give me a 
little direction, I would be most grateful.

Thanks!

   -- Bill