Well, you'll need a domain name and web hosting (I have a short list of web hosts here
); if your site is small, especially if it is new, you DO NOT NEED a dedicated server or VPS, shared hosting or Business Shared Hosting should be fine until said time your web host comes to you about server resources.
Your host will need to support PHP 5.6 (UBB.threads
is not currently compatible with PHP7) and should pass all of the tests in my System Requirements Test
From there you need a license to UBB.threads
and then you'll either install it yourself, hire UBBSystems (the vendor) to install it, or hire a 3rd party developer to install it.