- Log in as a Wordpress administrator and find the Plugins tab
- Click the "Install Now" button
- Click "Activate"
- There's another "Install" button here. Mash it.
- Now the thing's finally active. Find the "New Code Block" button.
- Fill out some sensible details for your new code block. I suggest stick it in the Footer, as far down as possible.
- Paste in the Adroll code. On the right, select the Auxiliary tab and check "Entire Website." Hit the "Save All Changes" button.