How to change hostname in FC3

[Johnny Smith]

I have a Dell Laptop on which I have installed FC3.

when I installed it I either missed the gui for entry
of the desired hostname... or ?

I have later added profiles for a wlan card and a
separate lan-ethernet card.

The boot up is slower than usual and I get a message
that I don't have a proper hostname and "X" complains
loudly.  

on the splash screen the hostname shows up as 
'localhost.localdomain'

However when I do 'hostname newhostname' it only holds
it til I reboot and reverts to
localhost.localdomain....

Curiously I am unable to place anything in my
/etc/hosts file... if I do it disappears on reboot.

Could these problems be related

How can I make  new hostname permanent?

Thanks in advance

Johnny








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