No New Post box visible for visitors-new registrations

Hi Steven,
I spent all day to figure out how visitors can see the box at the top “Hi xxxx whatch up to? when they visit the site to start and post a new thread. I only see this box when i am logged in as an admin. I managed to install Ajax-register and that works fine so peoples can register and login but annoyingly, the box is still not there…I can only see that box and post a new comment when i’m logged in as admin…but when i simulate a normal user registration….the box is not there and users can only reply or leave a comment but can not create a new thread!!! please help what do i need to do? thanks so much in advance.