Setting up2date to work with yum repository

Hi,

I've been successfully using yum to install packages off a local repository 
created with createrepo (yum-arch is depreciated, right...?).

The problem I'm having is to configure up2date to work with the repository. I 
know this list is not for up2date discussions but I hope there is someone who 
has already done that and can give me a quick answer.

The command createrepo creates repodata directory with various xml files in it 
but when I point up2date to the repository it looks for headers/header.info 
which is what yum-arch used to create.

In /etc/sysconfig/rhn/sources I added:
   yum cse http://server_name.com/repos/RHEL-AS4.0

So, now when I run up2date --showall it exit out with this error:
---
[root@peterws rhn]# up2date --showall                           
An error has occurred:

An HTTP error occurred:
URL: https://server_name.com/repos/RHEL-AS4.0/headers/header.info
Status Code: 404
Error Message: Not Found

See /var/log/up2date for more information
---

I'm using:
OS: RHEL AS4
up2date-4.4.69

Any help will be appreciated.

Thank you.
Peter