I would reccomend Vertexhost:
http://www.vertexhost.comNot only can you install phpBB from the control panel (it's listed under Install Bb), there is also an option to install InvisionBoard, which also looks really nice (it's hidden in Script Libraries). BTW, speaking about InvisionBoard, did it used to be free but not anymore? Because it's listed as free @ Hotscripts.com, and it's in my control panel (version 1.3), but their site is plugging version 2.0 and it is certainly not free. Maybe they've changed their licensing agreements. But once again, I reccomend Vertexhost because the control panel can install two very good bb programs for you. If you need more, go to:
http://www.hotscripts.com/PHP/Scripts_and_Programs/Discussion_Boards/index.html
