webloginpe questions

Hello,

I use for my site WebLoginPe that now works well:
http://oldvwmania.nl/index.php?q=aanmelden

Now my question is, how can I when the items www.oldvwmania.nl ditto (which headlines news items below) a za comment that only registered users can use?
and it is also possible the details of your webloginpe somewhere else on the site to show?

And another thing, all personal information except to remember his birth? that will automatically 01/01/1970 why?

Sincerely,
Roy Wagemakers