Server name, how-to change forward

[Blazej Sawionek <B.Sawionek@elka.pw.edu.pl>]

I need to change the name of my machine.

I changed `/etc/hostname' and during startup it waits for several
minutes after having displayed:
starting printer spooler: lpd 
(finally it reboots, but it suggests something is wrong...)

BTW:
During hamm installation I was asked several times about the future
name of my server (being given as default the one stored in
/etc/hostname), so it seems I should change it in many places.

How should I do it correctly?

Blazej