http://www.centos.org
You'll avoid the hassle of Red Hat by using it's best clone. It's basically RHEL without the logo and trademark license agreement. To legally use RHEL now, you need to purchase it. Although you can use it, you just have to agree to their License and Terms. You're better off just using CentOS, it's basically RHEL like I said without the Red Hat logo plastered everywhere within the OS.
