"How to set up for usage with yum (minimum required version: yum 2.4.x): RHEL5, CentOS, Scientific Linux, RHEL4 yum, SLES yum Note: The version of yum distributed on CentOS 3 by default is too old (yum 2.0.8). You will need to upgrade to a yum 2.4.x version in order to use these repositories. The older version of yum does not support plugins or mirrorlists, which are required for these repos to work. "