Hide pages for registered users

Hello,

I have a question, how can i hide pages for the group “Registered users”?
If this isn’t possible, can you give me some advice?

Because in that case i was think to create a system group “Non-registered users” so i can assign that group to the page that only should be visible for guests.

Thanks!

http://wordpress.org/extend/plugins/contexture-page-security/