Preboot service documentation

Hello,
- I have the documentation of Zen 7 (dm7admin.pdf) date 28 feb 2006
- I have the student guide of the ZENworks 7 Desktop Management
administration (3062)
- I have a Netware 6.5 with ZEN 7 running on it

I noticed none of the above documentation reflects the contains of my
sys:TFTP directory :
- where e.g student guide told about "nvlnbp.sys" where it's DINIC.sys
on the server.
- where dm7admin.pdf told about linux.1 and linux.2 files non-existent
on the server...

My question is, does anyone know where I can find a "correct"
documentation on the "Preboot service" for ZEN 7 desktop management ?

Many thanks to you all

Pascal