Since I’m working with CloudStack I’m also working with CentOS. As I’ve been working with Debian for over 10 years, it sometimes takes some extra time to get things done. Like when you want to install a package that is not in the default repo’s.
This is how to enable the RPMForge repository:
Start to import the key:
rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt
Then download the RPMForge release file:
wget http://apt.sw.be/redhat/el6/en/x86_64/rpmforge/RPMS/rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm
Then all you need to do is install this rpm:
rpm -i rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm
You only need to do this once. Now the packages from RPMForge can be installed using yum. Have fun!
Remi Bergsma's blog 
Please let me know the procedure for 32 bit machine
Hi Charles,
Replace ‘x86_64’ with ‘i386’ for 32bit packages:
wget http://apt.sw.be/redhat/el6/en/i386/rpmforge/RPMS/rpmforge-release-0.5.2-2.el6.rf.i686.rpmrpm -i rpmforge-release-0.5.2-2.el6.rf.i686.rpmGoodluck!