nano /etc/yum.repos.d/CentOS-Base.repo
add the following repos, and it should get more options.
[dries] name=Extra Fedora rpms dries - $releasever - $basearch baseurl=http://ftp.belnet.be/packages/dries.ulyssis.org/redhat/el4/en/i386/dries/RPM...
[dag] name=Dag-RHEL-Yum baseurl=http://dag.linux.iastate.edu/dag/redhat/el$releasever/en/$basearch/dag http://www.mirrorservice.org/sites/apt.sw.be/redhat/el$releasever/en/$basear... http://mirrors.ircam.fr/pub/dag/redhat/el$releasever/en/$basearch/dag http://apt.sw.be/redhat/el$releasever/en/$basearch/dag