Thanks for the help !
Where do I edit this "baseurl" setting ?
In the configuration file you created/edited in order to set up usage of Dag's repository. This will be either /etc/yum.conf or a file in the /etc/yum.repos.d/ directory.
If you do: $ fgrep apt.sw.be/redhat /etc/yum.conf /etc/yum.repos.d/*
that should find it for you.
Paul.