[pmwiki-users] getting nice blocks on my pages

[Roger]

Hi,

Can anyone telle me how I can get the nice block on my pages like in
http://www.pmwiki.org/wiki/Cookbook/MonobookSkin:

Code is this:
>>yellowbox<<
:Note:The original layout is supposed to handle a 135x135 pixels logo. This
explains why the PmWiki logo looks a bit alone in its corner.
>><<

But it doesn't work on my Wiki.

  Thanks for any help,

        Greetings,

            Roger