easy runlevel editor like "ntsysv" in Red Hat

I've no found an easy way to edit the services that has to be initiated at booting. Red Hat comes with "ntsysv" that allow me do that easily. In Suse I use Yast2 but it's very tedious. I've tried to use "chkconfig" but it seems doesn't work. Saludos, Freddy Chavez.