User-agent: googlebot
Disallow: /demos/*.php$
Disallow: /register/
Disallow: /*?skip

User-agent: Slurp
Disallow: /demos/*.php$
Disallow: /register/
Disallow: /*?skip

User-agent: msnbot
Disallow: /demos/*.php$
Disallow: /register/
Disallow: /*?skip

User-agent: *
Allow: /demos/index.html
Disallow: /demos/
Disallow: /register/