Linux/Enable rpmforge repository for Centos
cd /tmp wget http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm rpm -ivh rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm
cd /tmp wget http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm rpm -ivh rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm