WordPress.org

1. Upload "post_thumb" to the "/wp-content/plugins/" directory

2. Activate the plugin through the "Plugins" menu in WordPress

3. Place "<?php post_thumb(); ?>" inside the wp-loop of your template, where ever you want the thumbnail to appear.

4. A nice way to use this plugin is to link the images to the post by wrapping the plugin template tag into the post URL:

<a href="<?php the_permalink(); ?>" rel="bookmark" title="<?php the_title(); ?>"><?php post_thumb(); ?></a>

1. Adjust display and image size using CSS. The plugin renounces on resizing the thumbnail because this can be done easily inside your style.css. You can used it at any place of your theme by giving it a "max-width" value. The height will automatically be adjusted and, in the case that the image is more narrow than the "max-width", it will keep its original dimensions.