fresh install but trying to duplicate an apache environment

With my brand new server (RedHat 6.2), I think I have apache (apachectl -v == 2.2.5) already installed.  I am a bit confused as to whether httpd is the rpm or just a subset of apache.  I have a CD with apache-tomcat and apache-jasper rpm's.   Neither of those seem to be preinstalled (at least rpm -qa doesn't list them).  But I my problem is that apache looks to be installed at /var/www.  I'm trying to duplicate an existing apache webserver and need things at /usr/local/apache/htdocs/www.  I am new at this.  Should I uninstall and reinstall apache?  And what do I reinstall?  apache-tomcat? and is there some make install or ./configure that creates /usr/local/apache/htdocs/www (or whatever you want for the location with some variable definition perhaps).  Is there a location to go to with a nice set of step by step instructions?  Sorry but I'm really new to apache installs...