User-Agent: Googlebot 
Disallow: /admin     
Disallow: /images     
User-Agent: Yahoo 
Disallow: /admin     
Disallow: /images     
User-Agent: Ia_achiver 
Disallow: /admin     
Disallow: /images     
User-Agent: MSNbot 
Disallow: /admin     
Disallow: /images     
User-Agent: Inktomi_slurp 
Disallow: /admin     
Disallow: /images