User-agent: Googlebot-Image
Disallow: /*

User-agent: Googlebot
Disallow:

User-agent: Mediapartners-Google* 
Disallow:

User-agent: *
Disallow: /admin.php
Disallow: /admin
Disallow: /images
Disallow: /includes
Disallow: /themes
Disallow: /blocks
Disallow: /language
Disallow: /members
Disallow: /rate