avexdesigns

I’m trying to figure this out as well. Can anyone help??

ok, found it.

<?php $prevPost = get_previous_post(true);
if($prevPost) {?>
<?php $prevthumbnail = get_the_post_thumbnail($prevPost->ID, array(100,70) );?>
<?php previous_post_link('%link',"$prevthumbnail  <p>%title</p>", TRUE); ?>
<?php } ?>
<?php $excerpt = $prevPost->post_excerpt ? $prevPost->post_excerpt :apply_filters('get_the_excerpt', $prevPost->post_content); echo $excerpt; ?>

I need help with this as well. There is not much out there on this topic.

I dont know if you solved this. but you need to edit the functions.php

TwentyTen resizes the image using

define( 'HEADER_IMAGE_HEIGHT', apply_filters( 'twentyten_header_image_height', 198 ) );

I am looking to do this as well. If anyone can help, it would be much appreciated.