Controlling services on RHEL 4 :

List all services :

# chkconfig --list

Active/Deactive services

# chkconfig "servicesname" on/off

Set service active on specific run level

# chkconfig --level 35 "servicesname" on/off

Remove service

# chkconfig --del "servicesname"

Add Service

# chkconfig --add "servicesname"

Restart service

# service "servicesname" restart

or using GUI/System Utility :

# system-config-services

# ntsysv