Adding Custom Forums To My Website

The current forum board on my site is a default set up I would like to either code my own (I would need help coding) or buy forum (need help adding to my site) if anyone can help me get a good looking forum board on my site I would be greatful

What I want to do with my Forums
-Unlimited Forums, Discussion & Threads
-Admin Access, Moderators, Premium Users, Donators, etc.
-Reputation

Would I be able to add XenForo to my site ? Forums - RMzÂ*ModÂ*Shop