Text editor won't let me edit conf files. How do I?

[phil]

Kevin Kofler wrote:
> Rangeen Basu wrote:
>> you can also use this command:
>>
>> su -c 'gedit /etc/your_file.conf'
>> Password:
> 
> Using su with GUI apps can lead to X11 sockets and the like getting wrong
> permissions and screwing up that user's configuration. YMMV.
> 
>         Kevin Kofler
> 

hence my total confusion as to why fedora no longer ships gksu??