Simple and easy Google Adsense Widget
Download the current version of Adsense Made Easy from the download link on the right.
Upload the folder
adsense-made-easy.zip to the directory
/wp-content/plugins/ in your wordpress setup.
Activate the plugin Adsense Made Easy through the 'Plugins' menu in the administration page of your WordPress.
Head to the Widget section of your Appearance Options and use the Adsense Made Easy Plugin.