[CentOS] How do I create a new menu category in GNOME ?

JohnS a écrit :

> 1. Ok what I said was you are on the right way to doing it
> 
> 2. Heres the easy way.....
> Right Click on the Applications Menu Click on Edit Menus.  I think you
> can figure the rest out it's pretty easy.
> 
> OK manually you can put the *.desktop entry into /YourHomeDir/.gnome
> or /home/.kde
> 
> Thankfully I had to learn the hard way.  You get the easy way.  Took me
> a whole afternoon to figure it out.
> 

That's on a per-user basis. I need the new menu entry for *all* users. 
Any idea how I could achieve that ?