Jkreativ Lite: Featured image –functions.php– Please help

Hi. I’m using the Jkreativ Lite theme which I really like, however I’m having an issue with the ‘featured image’. I’ve been looking through the support forum and have found that many other ppl have had the same problem and that adding something to the php will fix it. However, I’m a php novice and haven’t a clue where to add it in in the context of the code! Can someone please let me know?

This is the suggested fix:

I’ve found that adding the following line to the functions.php helps:
add_theme_support( ‘post-thumbnails’ );
This enables a post thumbnail option when you’re writing a new post.

This is the code in the Jkreativ Lite: Theme Functions (functions.php) doc:

<?php

/**
* Load
*/

require_once locate_template(‘/lib/init.php’); // initialize
require_once locate_template(‘/lib/themes-functionality.php’); // additional themes functionality
require_once locate_template(‘/lib/init-menu.php’); // initialize menu
require_once locate_template(‘/lib/newadmin.php’); // new admin
require_once locate_template(‘/lib/scriptstyle.php’); // loading style & script

/*
* EOF
*/

At what point do I add the fix in?? Urgh, need a dummie’s guide, I’m afraid!!
B