WordPress.org

1. Upload plugin to the /wp-content/plugins/ directory
2. Activate the plugin through the 'Plugins' menu in WordPress
3. Place <?php christmassprite_countdown(); ?> in your templates

You can also use Dutch version of this plugin, just replace christmasspritecountdown(); with christmasspritecountdown('ChristmasTree_Dutch'); Thanks to Bas Prinsen for translation.