Virtual Hosting - httpd.conf help

[sarg]

I am learning to setup my new dedicated server. I am wanting to host around 10-20 sites on it. Is this all I need for each domain in the httpd.conf file.

<VirtualHost 66.93.56.129>
DocumentRoot /home/userdomain/www
ServerName www.my-dom.com
</VirtualHost>

It only answers with the www and not without it. How can I setup to answer with or without the www prefix or is this a dns setting?

[airman]

Here is a snippet of mine. It could help out with getting your site to answer without the www. These are my settings:

ServerName ns1.airman.com
ServerAdmin support@airman.com
Listen *:80
Port 80
NameVirtualHost 72.96.152.127

# Virtual host airgunner.com
<VirtualHost 72.96.52.127>
DocumentRoot /home/airgunner/www/
ServerAdmin support@airman.com
ServerName airgunner.com
ServerAlias www.airgunner.com
ScriptAlias /cgi-bin/ /home/airgunner/cgi-bin/
</VirtualHost>

This works fine on my RH9 server however yours may differ slightly.