[Redhatlinux] How do I delete the previous apache and change the new version?

[Redhatlinux] How do I delete the previous apache and change the new version? -- Linux general technology-Linux technology and application information. For details, refer to the following section. Newly Installed Redhat, all installed components. You can Upgrade php and apache to support some discuz functions when installing the DZ Forum recently. You cannot Upgrade apache and php,
Then rpm-qa httpd and rpm-qa php are able to see that the version is very low and the version is really to be upgraded.

You can find some update Methods on the Internet, but after the operation, even the httpd service cannot be started. The system prompts that the service has not been registered for authentication ,.
I am very depressed. I can't operate it all now. Do I have to reinstall the linux system?
Should the Nlinux system be able to upgrade the software?
Let's take a look at the commands I have used:
Downloaded httpd-2.2.4.tar.gz
[Root @ localhost du] # tar-zxvf httpd-2.2.4.tar.gz
[Root @ localhost du] # httpd-2.2.4 cd
[Root @ localhost httpd-2.2.4] #./configure -- prefix =/usr/local/apache2 -- enable-so -- enable-speling -- enable-rewrite
-- Enable-forward
# Make
# Make install
[Root @ localhost httpd-2.2.4] #
[Root @ localhost httpd-2.2.4] # chkconfig -- add httpd
Service httpd does not support chkconfig

In this case, apache cannot be started. How can this problem be solved?
Why is there no restart command after service httpd restart as before? httpd can be found in ntsysv in the past,
There is no such thing !!!!!!!! Urgent