User-agent: Mediapartners-Google* 
Disallow:

User-agent: *
Disallow: /cgi-bin/
Disallow: /gfx/
Disallow: /order.cgi
Disallow: /order.html
Disallow: /contact.html

User-agent: Googlebot-Image 
Disallow: /download/
Disallow: /covers/