How to add link widget to a theme ?

It’s not exactly a links widget, because those only live in the sidebar, but you can create a links page that will display your links and a short description on a separate page. Is that what you want?

Just copy your page.php file, rename it linkspage.php and put this in the header:

<?php
/*
Template Name: Links
*/
?>

And here’s the “guts” of the links page:

<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
	<div class="post" id="post-<?php the_ID(); ?>">
	<h2><?php the_title(); ?></h2>
		<div class="entry">
			<?php the_content('<p class="serif">Read the rest of this page &raquo;</p>'); ?>

			<ul>
			<?php wp_list_bookmarks('show_description=true&between=:  '); ?>
			</ul>
		</div>
	</div>
<?php endwhile; endif; ?>

Thank you for your help. But I would prefer to have the links displayed in my index page (main page). I had a look in the sidebar.php and found something like this <php? link-………> I have copied this to the home.php and it is working now, however I have a problem to put this widget next to my image. It appears under it:
IMAGE
IMAGE

Do I have to use some special <table code to have them side by side, like this:

IMAGE IMAGE

I used <table <tr <bd functions but it corrupts the whole page and sidebar.