If you have the RPMforge repository enabled, you should find it easily just using yum (or Add/Remove Software from menu Application if using GNOME). Here is an example on my CentOS 5.4 box:
Code:
# yum info whowatch
<omitted>
Available Packages
Name : whowatch
Arch : i386
Version : 1.4
Release : 1.2.el5.rf
Size : 28 k
Repo : rpmforge
Summary : Display information about users currently logged on users
URL : http://wizard.ae.krakow.pl/~mike/
License : GPL
Description: <omitted>