Widgetize slideshow area

Hello, I really need your help.

I want to widgetize the white area you can see at this link, next to the slideshow:

http://www.mangiareabarcellona.com/

Can you please help me?

I used this code in my theme (arras) library/launcher.php:

register_sidebar(
array(
‘name’ => ‘buscador’,
‘before_widget’ => ‘<li id=”%1$s” class=”widget %2$s”>’,
‘after_widget’ => ”,
‘before_title’ => ‘<h2 class=”widgettitle”>’,
‘after_title’ => ‘</h2>’,
)
);

and I can see the widget “buscador” in the backend.

But I don’t know how to put it where I’d like to

Thanks a lot