User-agent: Slurp
Disallow:

User-agent: Google
Disallow:

User-agent: googlebot
Disallow:

User-agent: Yahoo-slurp
Disallow: 

User-agent: Msnbot
Disallow:

User-agent: bingbot
Disallow:

User-agent: bing
Disallow:

User-agent: *
Disallow: /