I use joomlaboard. best integration, but lacks in features and support. If your main focus is "community Builder", you'll notice a majority use this forum. If not, the there are others like SMF and phpBB which are better boards, but don't integrate as well.
Have you done a search? you will find a lot of info, or questions at least
Post edited by: stevebor1, at: 2006/05/22 07:57