Starting with Red Hat Enterprise Linux 5, the entire stack of tools which installs and updates software is now based on yum (http://linux.duke.edu/projects/yum). This includes everything from the initial install via anaconda to the host software management tools like system-config-packages to the updating of your system via Red Hat Network. New functionality such as the ability to use a yum repository to supplement the packages we provide with your in-house software, plugins to provide additional behavior tweaks and some of the various new utilities which you can take advantage of will be discussed.