Dovecot conf error

[Sovetryne]

Well, "newbie" is perhaps not appropriate, but if I have to choose between "guru" and "newbie", I'd rather be a newbie

Running: CentOS 5.3
Trying to: authenticate virtual mailbox users with Dovecot

I have installed Postfix, and that is working fine: all mails are coming down on my server without any problem, but someone has to retrieve the mails from one specific mailbox. Therefore I want to use dovecot (unless somebody has a better example.

I have installed dovecot (it came in the box with CentOS 5.3, so it wasn't me who installed it).
I found a tutorial, but that is based on an old version of Dovecot: Virtual Hosting with Postfix, part two | HowtoForge - Linux Howtos and Tutorials

Line 25 and 26 can't be used by this version. So I changed that to something I read on dovecot.org:

userdb passwd-file {
args = /var/mail/vhosts/%d/etc/passwd
}
passdb passwd-file {
args = /var/mail/vhosts/%d/etc/shadow
}
Ofcourse I created those files (passwd and shadow) in that directory, and the mails are also coming down in /var/mail/vhosts/<domain>/<username>

But when trying to run dovecot -n, it says:

Warning: Ignoring deprecated 'login' section handling. Use protocol imap/pop3 { .. } instead. Some settings may have been read incorrectly.
Warning: Ignoring deprecated 'login' section handling. Use protocol imap/pop3 { .. } instead. Some settings may have been read incorrectly.
Error: Error in configuration file /etc/dovecot.conf line 27: Unknown section type
Fatal: Invalid configuration in /etc/dovecot.conf

I am actually looking to a GOOD tutorial, or someone who understands Dovecot

Please help

[Sovetryne]

Anybody? Somebody?