Apache 2 upgrade - Apache 2 installation
Note: This how-to has worked fine on plesk and cpanel servers and numerous tests. I cannot guarentee it will work on yours and cannot take responsibility for the outcome. I do not recommend running this how-to on an ensim server.

Note: Text in green are commands that should be run from the root shell

FRESH INSTALL - Apache 2 installation
This part of the how-to is for a clean install only, for upgrades please scroll down.
Make a copy of your current httpd.conf incase you need to roll-back

cp /usr/local/apache/conf/httpd.conf /usr/local/apache/conf/httpd.conf_back

Download The Apache Tar.Gz File
wget http://www.tux.org/pub/net/apache/d...d-2.0.47.tar.gz

Extract The File To Your Server
tar -xz -f httpd*

Move Into The Extracted Folder
cd httpd*

Run The Configuration File, (The bits following ./configure were custom wrote by me, you may customise these how you wish)
./configure --prefix=/usr/local/apache --with-php --with-mysql --with-susexec --enable-mods-shared=all --disable-info

Run The Make File
make

Disable Apache Signatures (Security)
Locate ServerSignature and change to off

Add the line below, after ServerSignature off
ServerTokens ProductOnly

Save httpd.conf
CTRL + X then "Y" then "enter" without the "'s

Start Your New Apache
/usr/local/apache/bin/apachectl start

Your sites should now be working.
Please scroll down to the bottom of the page, after performing the commands above

Apache 2 Upgrade - Upgrading Apache
Make a copy of your current httpd.conf incase you need to roll-back
cp /usr/local/apache/conf/httpd.conf /usr/local/apache/conf/httpd.conf_back

Download The Apache Tar.Gz File
wget http://www.tux.org/pub/net/apache/d...d-2.0.47.tar.gz

Extract The File To Your Server
tar -xz -f httpd*

Move Into The Extracted Folder
cd httpd*

Run The Configuration File
./config.nice

Run The Make File
make

Run The Install Make File
make install

Start Apache
/usr/local/apache/bin/apachectl restart

All done, you should now have a successfully upgraded/installed apache configuration.