The following code is already in the theme function php:
if (function_exists('add_theme_support')) {
add_theme_support('post-thumbnails');
add_theme_support('nav-menus'); // For Beta and RC versions of WP 3.0
add_theme_support('menus'); // For the final release version of WP 3.0
add_theme_support('automatic-feed-links');
What do I do with it, if anything?
Also, I don’t know what you mean by
=========== and in the loop add this code
the_post_thumbnail() //for default thumbnail size
the_post_thumbnail(‘single-post-thumbnail’) //for custom sizes you defined at the functions.php
Thanks for the help.