Is there a specific file I need to check or is it a process I need to be looking at? If I am running inetd, do I need to disable it and run xinetd instead?
If xinetd is installed and running you should have /etc/xinetd.d directory with configuration files and an xinetd process running. See: how to tell if you're using xinetd. Which one you run is up to you, but you can't use them both simultaneously. Xinetd is supposed to be more secure and I think most of the current distros are using it now.