WordPress.org

Installation is very easy:

1. Upload newtagcloud.php to the /wp-content/plugins/ directory
2. Activate the plugin through the 'Plugins' menu in WordPress
3. Check out the 'Widgets' tab in the 'Theme' menu and drag the 'New Tag Cloud' widget to your sidebar.

Using directly from a theme file: Follow the steps 1 and 2 above. Step 3 is to place this code into your theme file:

Or you wan't place a tag cloud in a post or on a page? Use a shortcode: [newtagcloud]