How to show featured image on homepage instead of top image

I’m guessing it will take a bit of work. Now my blog shows the image from the excerpt (up until ‘read more’ break). What I want to do is only show the featured image because they’re all cut to the same size, as opposed to the top images which are different sizes. I’m trying to get a more even look in the index page.

In the loop, we have

<div id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
						<h2><a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>"><?php the_title(); ?></a></h2>

						<div class="post-meta">
							<b>By <?php the_author() ?>
							<span class="info">
								</b><span class="date"><?php the_time('M. d') ?></span>
								<span class="category"><?php the_category(', ' ); ?></span>
								<span class="comments"><?php comments_popup_link( __('no comments', 'silverorchid'), __( '1 comment', 'silverorchid'), __('% comments', 'silverorchid')); ?></span>
							</span>								

						</div> <!-- /post-meta -->

						<div class="entry">

						<?php
							if ( $gazpo_settings['gazpo_read_more'] != ''){
								$readmore_text= $gazpo_settings['gazpo_read_more'];
							} else {
								$readmore_text= 'Read more →';
							}
							the_content($readmore_text);
						?>
						</div> <!-- entry -->

					</div><!-- /post-->

It looks like it’s part of whatever ‘entry’ is, but no idea where it is, or how to edit it, or if it’s even possible.