Converting from RHEL 6 to Centos 6.2

I recently installed RHEL 6 (workstation) but had not yet purchased an RedHat Network subscription when i learned that i can change it to Centos very easily and then updates will work off of Centos repository. So i upgraded RHEL 6 to Centos 6.2 with the following commands executed in order:

yum clean all
mkdir ~/centos
cd ~/centos
wget http://mirror.centos.org/centos/6.2/os/x86_64/RPM-GPG-KEY-CentOS-6
wget http://mirror.centos.org/centos/6.2/os/x86_64/Packages/centos-release-6-2.el6.centos.7.x86_64.rpm
wget http://mirror.centos.org/centos/6.2/os/x86_64/Packages/yum-3.2.29-22.el6.centos.noarch.rpm
wget http://mirror.centos.org/centos/6.2/os/x86_64/Packages/yum-utils-1.1.30-10.el6.noarch.rpm
wget http://mirror.centos.org/centos/6.2/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-10.el6.noarch.rpm
rpm --import RPM-GPG-KEY-CentOS-6
rpm -e --nodeps redhat-release-server
rpm -e yum-rhn-plugin rhn-check rhnsd rhn-gnome-setup rhn-setup
rpm -Uhv --force *.rpm
yum upgrade
reboot

 This above is based on http://yo61.com/upgrading-rhel-6-2-to-centos-6-2.html blog post.