Forumdisplay is a PHP library that helps developers to create clean, user-friendly and easily customizable forum pages from a fully integrated database-driven web application.

I’m assuming you are trying to display forums (a few posts) on your WordPress blog/page. If that’s your case, then you have 2 options: 1) Buy a ready-made forum plugin 2) Build one. Also, if you decide to build a forum plugin, you could use a framework such as Fusion Framework. I hope that helps!