how do i remove apache server form startupo (i.e. i don't want it to automaticly start on boot).

i tried this
Code:
sudo update-rc.d apache remove
and this
Code:
sudo update-rc.d apache2 remove
it doesn't seem to work as i keep getting "it works" page on localhost and also the joomla page (well if i start only mysql service).

i installed LAMP via tasksel.