Rotate adsense(or other ad) units in alternating positions in your single posts (pages optional)
Backup your WordPress database and files before you install or update.
Upload the folder ad-randomizer-single-post with its contents to wp-content/plugins/
Activate the plugin
Go to your dashboard and look for the Ad Randomizer link in your menu. Click the link. Input your adsense codes. Save and go.
If you are having problems please visit http://wppluginsdev.com and drop a comment on the page for help.