Ok. It´s because I wanted to follow this how to, to jail sftp users:
http://www.adamsworld.name/chrootjailv5.php
and it requires version 4 or 5.
<DISCLAIMER>
this is not supported by contribs.org, and once you do it, you'll be on your own, so please don't come here to ask for support
I've not tested it
</DISCLAIMER>
you can follow
this howto to create your openssh rpm to upgrade to 5.2
you should start from point 7 of the howto you linked, so you need to create your own template fragments to modify sshd_config
create group and users via server-manage panels
if you want to chroot users into their home you need to do the chown/chmod commands.. otherwise, if you need them to be jailed into an i-bay, you should not need anything else than create an i-bay and associate it to your group.
once you've done, if everything works, please create an how-to in the wiki, thank you
HTH
Ciao
Stefano