stupid networking question

[arne anka]

> One of my quarrels with NM is that it's difficult to figure out how to  
> stop
> it autoconnecting to, say, the neighbours open wireless that you used  
> for a
> couple of days before your own ADSL was installed....

i think a right click somewhere brings up a list of preferred networks  
where you can delete the entries not needed anymore (i distinctly remember  
the list, but not how i got there -- the offending network maybe?)