Small annoyance with mate desktop and a configuration option.. or lack there of....

Hi. Im using the new fedora 18, which btw nice job, coming along nice.
What im tryin to do is remove the desktop icons, the ones that appear when i mount a harddrive etc, And I have like 6 harddrives I use and becomes a clutter after time..
So I looked it up, What I have read was to go to:

mateconf-editor > apps
> caja
> desktop
Uncheck the volumes_visible option.

I have tried this with both mateconf-editor and dconf-editor...
Only issue is, after apps in config editor, there is no caja option, Only options I currently have is caja-sound-converter and mateconf-editor, none of which gives me my desired option, I also tried to do more searching but to no avail. All methods I currently could find are the same....
If theres any other way to do this which way would this be? I dont need no fancy eye candy config manager or anything, a text config will due, But I have no idea where it would be located and I dont feel like spending 3 pots of coffie on figurin out such a small issue....

Anyway Thanks, and hope someone has a solution :)

Btw once again, fedora 18 is looking good. Added a few custom tweaks myself :D maybe ill think about releasing em...