Open up ssh client and connect to the server as root user
for 32bit: wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.1-1.el5.rf.i386.rpm
For 64 bit wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.1-1.el5.rf.x86_64.rpm
Install DAG’s GPG key rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt
Install the package For 32 bit rpm -i rpmforge-release-0.5.1-1.el5.rf.i386.rpm
For 64 bit rpm -i rpmforge-release-0.5.1-1.el5.rf.x86_64.rpm
Install Rar and Unrar yum install rar unrar