Usual friendly crowd!
1. Locate where apache is installed. It is at /etc/httpd on previous versions of Redhat, I don't know about 9.0. When you do find it everything below is relative from it.
2. By default it will (probably) serve content from the htdocs directory. You can either blow this away (easy option) or reconfigure the server to serve from another place (better, but tricky).
3. The configuration file is httpd.conf located in the conf directory. It is also possible (depending on RedHat I guess) to configure the server from 2 other files called srm.conf and access.conf. In one of these files (usually) is a line like:
DocumentRoot htdocs
or
DocumentRoot /etc/httpd/htdocs
you get the idea. Change it to where you want to serve content from and type
killall -HUP httpd
to restart. If you got it right then good luck, if not $25/hour is very reasonable. Even more reasonable are the docs you may have already deleted in step 2 which can also be found at
http://httpd.apache.org/docs-project/
This is all from memory. Backup anything you change first. You cannot beat paid professional service. I take no responsibility for you chewing your server or my advice being completely wrong. If it helps why not return the favour and allow us first quote on your next e-commerce project?
Bob
www.get-online.com