You can't set it to 0 via msconfig, you have to edit the boot.ini file directly. Here is a small batch file I use to do this. It maintains 3 levels of backup so if I screw up I can easily recover.
[codebox]@echo off
c:
cd \
attrib -s -h -r boot.ini
if exist bootbk3.ini goto is321
if exist bootbk2.ini goto is21
if exist bootbk1.ini goto is1
:is321
copy /y bootbk2.ini bootbk1.ini &
copy /y bootbk3.ini bootbk2.ini &
copy /y boot.ini bootbk3.ini
goto edit
:is21
copy boot.ini bootbk3.ini
goto edit
:is1
copy boot.ini bootbk2.ini
goto edit
:is0
copy boot.ini bootbk1.ini
:edit
notepad boot.ini & attrib +s +h +r boot.ini[/codebox]
Edited by Ztruker, 25 December 2007 - 12:05 PM.