PhpBB application package is popularly used to create internet forums and bulletins. Created in the PHP scripting language, the BB in its name stands for Bulliten Boards. PHP BB is an open source software released under the GNU General Public License.
Server Requirements :
What are the server requirements to run phpBB Olympus? Which databases are supported and what is the minimum PHP version required?
Supported databases :
Olympus supports a variety of databases. If you are an expert on one of these databases, working with it daily and competent in PHP do not hestitate to contact the development team.
MySQLi (MySQL 4.1+/5.0+)
Firebird 1.5+/Interbase 7.1+
MSSQL 2000+ (ODBC)
Minumum PHP version required
PHP >= 4.3.3
phpBB has released its third major version. Version 3.0 has a more professional, clean design with modular structure, is very secure and supports multiple languages. It also supports several databases servers and has a highly customizable layout.
http://www.bodhost.com/web-hosting/about-php-bb/" title="Add 'About PHP BB' To Squidoo">