User-agent: Mediapartners-Google*
Disallow: admin.php

User-agent: Googlebot
Disallow: /admin.php
Disallow: /images/
Disallow: /includes/
Disallow: /*?

User-agent: Slurp
Disallow: /admin.php
Disallow: /images/
Disallow: /includes/

User-agent: *
Disallow: /