So no one can help me on this?

So I'm completly re-doing everything on my sites. And I found this really good tutorial I'd like to use for my news, reviews, and interview section, which includes user comments. I know how to intergrate the PunBB login on your page, but could I make it so the user have to sign up to the forums, in order to post comments for the news, reviews, and interviews? And once they do, their nickname shows up beside their comment, with a link to their profile. And I do have basic knowledge of PHP/SQL

Here is the tutorial I was going to use: http://codewalkers.com/tutorials/19/7.html

Thanks!