Sidebar

hello i have uploaded a theme and i have an issuse with the sidebar,
it wont allow me to add any widgets or remove the one already up
the theme is serious-women here is the code

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

does anyone no how i can make it widget ready ??? i am new to this so my understanding of code is very limitted