It's a bit of a pain that many basic third party tools that aren't put of the main Centos/RHEL repositories are not available unless you compile them or install the RPMForge Repo.
*Updated 08/29 with new download location changed from apt.sw.be to rpmforge.sw.be
Here's a quick, simple/cut&paste way to do it:
After this you'll be able to install other useful tools such as bmon, etc... things that are available with any Debian based distribution in standard form.
enable, rd, packages, rhel, redhat, centos, linux, via, rpmforgeit, aren, repositories, compile, install, rpmforge, repo, updated, download, apt, sw, wget, http, en, rpms, rf, rpm, ll, bmon, etc, debian,