Hi,
If you want automounting you first need to install the 'autofs' rpm . That includes a sysv init script for the automount daemon that by default will automatically run at levels 3,4,5 . To activate it manually after install without changing runlevel / rebooting you can do as root :
# /etc/rc.d/init.d/autofs start
The main config file is /etc/auto.misc and that shows some examples of filesystems you might want to automount. The default is set up for a 'vanilla' mount of /dev/cdrom .
The way it works is you make reference to the device or mount point (under /misc) and the automounter transparently mounts the filesystem for you. For example, if you placed a CD in the drive and did :
$ ls /misc/cdrom
you should get a listing (i.e. you don't need to manually issue the 'mount' command)
Hope this helps