[Plugin: WTI LIKE POST] Please help!

I am using this plugin wti-like-post

<span><img src=”<?php bloginfo(‘stylesheet_directory’); ?>/img/icons/s_like.png” /><?php echo GetWtiLikeCount($post->ID) ?></span>

I need help with that,i have added a custom image and i wanna assign the plugin to the image.Is it working like that?any ideas??

Thanks