Guest go to registration zone

[taumau]

When I block some of my forum sections, the guests view as this:

The first section is open to guest and the second is closed.
It show the last post on the first and it says "Private" is the closed section.

But then, when a guest click on a closed section it shows as if there isn?t any post on that section, like this:


So what I would like is to when a guest click in a closed forum it links to the registration zone, like this:


Can you help me?
Thanks in advance
taumau