It's very easy. Just install the latest rpmforge-release package for your distribution and architecture.
This will automatically install the configuration and GPG keys that are for safely installing RPMforge packages.
Please select the correct command from the following list:
- Supported
- Red Hat Enterprise Linux 5 / i386:
rpm -Uhv http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el5.rf.i386.rpm
- Red Hat Enterprise Linux 5 / x86_64:
rpm -Uhv http://apt.sw.be/redhat/el5/en/x86_64/rpmforge/RPMS//rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm
- Red Hat Enterprise Linux 4 / i386:
rpm -Uhv http://apt.sw.be/redhat/el4/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el4.rf.i386.rpm
- Red Hat Enterprise Linux 4 / x86_64:
rpm -Uhv http://apt.sw.be/redhat/el4/en/x86_64/rpmforge/RPMS/rpmforge-release-0.3.6-1.el4.rf.x86_64.rpm
- Red Hat Enterprise Linux 3 / i386:
rpm -Uhv http://apt.sw.be/redhat/el3/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el3.rf.i386.rpm
- Red Hat Enterprise Linux 3 / x86_64:
rpm -Uhv http://apt.sw.be/redhat/el3/en/x86_64/rpmforge/RPMS/rpmforge-release-0.3.6-1.el3.rf.x86_64.rpm
- Red Hat Enterprise Linux 2 / i386:
rpm -Uhv http://apt.sw.be/redhat/el2.1/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el2.rf.i386.rpm
- Red Hat Linux 9 / i386:
rpm -Uhv http://apt.sw.be/redhat/9/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.rh9.rf.i386.rpm
- Red Hat Linux 7.3 / i386:
rpm -Uhv http://apt.sw.be/redhat/8.0/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.rh7.rf.i386.rpm
REFERENCE
http://dag.wieers.com/rpm/FAQ.php#B