User-agent: Mediapartners-Google* 
Disallow:

User-agent: *
Disallow: /index.php?page
Disallow: /index.php/
Disallow: /modules.php?mod
Disallow: /admin/
Disallow: /cron/
Disallow: /cache/
Disallow: /files/
Disallow: /img/
Disallow: /inc/
Disallow: /modules/
Disallow: /tpl/