On RH 7.3 there's no inetd.conf anymore afaik. Check for /etc/xinetd.d/ or use
chkconfig --list | grep on
This will list you ALL services that are activated using the init-scripts in /etc/rc.d/init.d/ ... you can of course deactivate a lot ... like who needs hardware checking everytime you boot? (hardware checking = kudzu).
If you have installed ntsysv you have a console GUI for chkconfig