[Blog] Permissions in Blog comments, is it possible?

[Parafal]

I would like to know if it's possible to set some permissions on my Blog's comments.

For example, I would like that no-register could read the blog but not the comments. Is it possible to have that?

I tried everything and nothing worked. I tried setting permissions for the VBcms Forum and it didn't work.

Any suggestion in how to do that?