I always used the ad_location_ templates as well, but the integrated option may be best for new admins.
I never felt right about vbulletin's and google's "partnership" but that's the tin foil hat talking hopefully..lol
Anyways ya that link doesn't work but if I search "adsense" from the docs home page it takes me to that link which does work now... weird
It should look like this OP
Attachment 156687