Suggested way to manage service's startup on boot in 10.04 LTS

[Ryan Chan]

Before 10.04, I can use rcconf to manage all services default's start
or not, that is so cool.

Now, in Ubuntu 10.04, rcconf no longer work (at least for some
services, e.g. mongodb)

Now, to disable it, I rename the /etc/init/mongodb to
/etc/init/mongodb.disabled, this is somehow working...

but this is stupid as now I cannot start it manually...

service mongodb start (no longer work)

Are there any document for these basic stuffs?