User-agent: googlebot
User-agent: 216.39.48.4 
User-agent: 216.39.50.116

User-agent: *
Disallow: /files/
Disallow: /_derived/
Disallow: /_private/
Disallow: /bmps/
Disallow: /gifs/
Disallow: /jpgs/
Disallow: general_navigation.htm