Nagios monitor setup fail

[k-planethost]

i try to setup Nagios to one of the servers
Nagios install on CentOS 5.5
i follow this guide and setup fail error has the follows

No package httpd available.
Package gcc-4.1.2-48.el5.x86_64 already installed and latest version
Package glibc-2.5-49.el5_5.7.x86_64 already installed and latest version
Package glibc-2.5-49.el5_5.7.i686 already installed and latest version
Package glibc-common-2.5-49.el5_5.7.x86_64 already installed and latest version
Package gd-2.0.33-9.4.el5_4.2.x86_64 already installed and latest version
Package gd-2.0.33-9.4.el5_4.2.i386 already installed and latest version
Package gd-devel-2.0.33-9.4.el5_4.2.x86_64 already installed and latest version
Package gd-devel-2.0.33-9.4.el5_4.2.i386 already installed and latest version
No package php available.

Fedora Quickstart
i use this as well but when i click http://ip/nagios
or http://servername/nagios i have a 404 error

how can i finally setup this script
any suggestions should be felpfull

all the servers are cpanel/centos

[cPanelTristan]

Have you tried contacting Nagios directly about the issue? They have a forum and many other resources listed at this location:

Nagios - Nagios Support