[Zope] how to set security settings to do this...?

Hi All, I am a zope newbie. This question may be stupid: Can I set up zope so that some of the objects(like SQLMethod, Page Template) cannot visit directly on the web, but they can be called by other public visitable objects(such as a script object)? I try to use proxy role, but failed. Is it just my mistake? Thanks. Gilbert Fine _________________________________________________________________ Add photos to your e-mail with MSN 8. Get 2 months FREE*. http://join.msn.com/?page=features/featuredemail