[TYPO3] mm_forum. Users' profiles shown to everyone.

[Andrii Shyshkalov]

Hello,

I am using mm_forum v0.1.4. The board policy: everybody may read posts, but
only registered users are allowed to write.
In user profile there are fields for different instant messengers, among
them - MSN, in which user may enter his email address. To secure it, I want
to show user's profile details only to registered, while keeping posts open
to everyone. 
(By default user details are accessible to everyone - just click "profile"
button)
 
I read manual, but did not find anything about that, and in the web too.
I am wondering - is it a missing feature or maybe someone knows how to do
that?

Thank you in advance,
Andrii Shyshkalov.