how do i change my facebook privacy?

[Anthony-carl]

I want to change my facebook privacy so that when strangers find me on facebook, they cannot view my wall or my pictures.

at the moment when I use that tool...'view your profile as the public would view it' it shows my wall, but funnily enough, it doesn't show everything that I have on my wall

and for my pictures, apparently the public can view my photos

any ideas on how to change it? i know it can be done because sometimes when i try to find someone i can't look at their wall or pictures! any help would be really appreciated, thank you D
brilliant, managed it...thanks guys!