change permissions to copy pictures into backgrounds

[Thomas Blasejewicz]

(2012/05/09 1:11), compdoc wrote:
>> owner: Thomas Blasejewicz
> I don't understand that. In the Linux distros I've known, you cannot have a
> user name that contains capital letters. Nor have I ever seen a username
> containing 2 names separated by a space.
>
> Maybe you're being too descriptive, and 'thomas' is the actual owner?
>
>
>> the "default folder" for wallpapers appears to be:
>> /usr/share/backgrounds
>> owner: root
>> group: root
> If the folder is owned by root, then use sudo to move any files into that
> folder, and change permissions if necessary...
>
Click on the "Pictures" folder that was already there (I did not create 
it) and look at properties:
thomas - Thomas Blasejewicz
THAT is what I get on my screen as "owner"

 >> "use sudo to move any files ..."
I am trying (for hours already), but have no success at all.

hold on ... I have just (for reasons unknown) succeeded in copyint my 
pictures.
Fine.

BUT, they do NOT show up when I open "Appearance -> Look -> Wallpapers
Only those "default images" show.
Why?