LinuxQuestions.org - How to enable epel in Red Hat

Hi, i'm trying to install php on my RHEL 5.1 from the "Remi repository" but there are some missed dependencies that i need to install it, i read that they are in the epel repositories so i tried to enable it, the instructions i read to do it says that i have to do this:

rpm -Uvh http://download.fedora.redhat.com/pu...5-3.noarch.rpm

So i do it, then i try to make sure i have epel enabled corectly, by typing :

yum repolist

but this is what i get:

Quote:

Loading "installonlyn" plugin
Loading "security" plugin
Loading "rhnplugin" plugin
This system is not registered with RHN.
RHN support will be disabled.

usage: yum [options] < grouplist, localinstall, groupinfo, localupdate, resolvedep, erase, deplist, groupremove, makecache, upgrade, list-security, provides, shell, install, whatprovides, groupinstall, update, groupupdate, info, search, check-update, list-sec, list, remove, info-sec, clean, info-security, grouperase >

options:
-h, --help show this help message and exit
-t, --tolerant be tolerant of errors
-C run entirely from cache, don't update cache
-c [config file] config file location
-R [minutes] maximum command wait time
-d [debug level] debugging output level
-e [error level] error output level
-y answer yes for all questions
--version show Yum version and exit
--installroot=[path] set install root
--enablerepo=[repo] enable one or more repositories (wildcards allowed)
--disablerepo=[repo] disable one or more repositories (wildcards allowed)
-x [package], --exclude=[package]
exclude package(s) by name or glob
--obsoletes enable obsoletes processing during updates
--noplugins disable Yum plugins
--security Include security relevant packages
--cve=CVE Include packages needed to fix the given CVE
--bz=BZ Include packages needed to fix the given BZ
--advisory=ADVISORY Include packages needed to fix the given advisory

¿any idea of what do i have to do?