I didn't think anyone even cared.  The HOWTO is more than a little 
outdated, but you can probably still glean enough useful information 
from it to boot a system.  A lot of the specifics will be 
irrelevant with the current versions of NetBSD and Linux.

Copies of the HOWTO can still be found here:

   http://vaxarchive.org/swdist/bsd/bdc/VAX-netboot-HOWTO.html
   http://vaxarchive.vax.org/swdist/bsd/bdc/VAX-netboot-HOWTO.html

-brian.