debian <> authconfig in "unix and windows accounts"

hi,

I'm following the wiki page on "Unix and windows accounts in zimbra ldap"
installing on Debian Etch and using ZCS 4.5.6
After some frustating time spent realizing
- the ldap password is different from the root password
- debian sets a random ldap password
I'm almost done ( oh boy am I almost done :)

I come now to section 'configuring on RHEL5 ... using authconfig'
Debian does not have this tool (possibly in a package somewhere)

Q: Do I need this section ? (the author (greg) uses Ubuntu -a distro having ties with debian)

On my system, I do not have a /etc/ldap.conf, nor /etc/pam.d/system-auth files
the example ldap.conf is very similar to /etc/libnss-ldap.conf

Q: in /etc/nsswitch.conf do I need to modify the line
shadow: compat
also to
shadow files ldap


regard
glenn

apparently it's not needed on debian.
I made it through the wiki with a working setup.
even my xp is now a proud member of the zimbra domain.
Woohoo, finally. break out the champagne!