Better way to manage services in Ubuntu with rcconf

I want to prevent apache2 from autostart but update-rc.d is not let me do that. Look like update-rc.d is only for install and remove scripts[ not for update ].

pnix@pnix-a7n:~$ ls /etc/rc2.d
README S20hotkey-setup S89cron
S05vbesave S20makedev S90binfmt-support
S10powernowd.early S20nvidia-kernel S91apache2
S10sysklogd S20privoxy S98usplash
S10xserver-xorg-input-wacom S20rsync S99acpi-support
S11klogd S20tor S99rc.local
S12dbus S50acpid S99rmnologin
S13gdm S89anacron S99stop-readahead
S20apport S89atd
pnix@pnix-a7n:~$ sudo update-rc.d apache2 stop 91 0 1 2 6 .
System startup links for /etc/init.d/apache2 already exist.
rcconf, the debian runlevel configuration tool, is more suit for this job. Let's install and run it from teminal.
pnix@pnix-a7n:~$ sudo aptitude install rcconf
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
Building tag database... Done
The following NEW packages will be installed:
0 packages upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 18.2kB of archives. After unpacking 115kB will be used.
Writing extended state information... Done
Get:1 http://th.archive.ubuntu.com feisty/universe rcconf 1.19 [18.2kB]
Fetched 18.2kB in 0s (20.3kB/s)
Selecting previously deselected package rcconf.
(Reading database ... 113711 files and directories currently installed.)
Unpacking rcconf (from .../archives/rcconf_1.19_all.deb) ...
Setting up rcconf (1.19) ...
pnix@pnix-a7n:~$ sudo rcconf
rcconf give easy interface to select which service should start in current run level.