Ok, the method seems to be still valid.
I tryed boot-up-manager but I have to say that I do not find the interface clear enough.
I truly prefered using sysv-rc-conf in terminal, it is clear enough if you have the minimum understanding of runlevels.
BUT, the services seem to have changed a lot since 2006 so I think the best way for us is to look on the net for information about services, ask on irc.freenode.net ...
If someone have enough time and knowledge, it could be a could idea to make a new up-to-date post with a longer list of services (olds and news) that would make a synthesis of all that have been said in this post.
Good Luck Boys & Girls