Install trouble - PHP & MS SQL

MS SQL "database type" not supported -------------------------------------------------------------------------------- I can't get MS SQL supported in my PHP installation. I've just installed PHP BB (and I have tried their forums) and want to use MS SQL, here's my setup MS Win 2K SP4 Apache 2.0.50 with OpenSSL v 0.9.7d MS SQL 2000 SP3 PHP 5.0.5 PHP BB 2.0.18 Apache has been running for some time serving other live sites (with MS SQL integration) - no trouble there. I've done an install of PHP (1st & fresh) onto the above, which tested fine with a simple test page. I have looked at the php.ini (based upon php.ini-recommended) file and (thanks to a posting on a forum) tried a few settings (like changing "mssql.secure_connection" from "off" to "on") I have copied all the DLL's to the same directory that holds PHP.exe (to be sure) and this is in windows PATH variable of course. I have uncommented the extension=php_mssql.dll as well of course. Elsewhere, ppl have mentioned having MS SQL Client tools installed, which I have. And, just in case it occurs to anyway, I have restarted Apache after changes. As a complete noob to PHP and PHP BB I've now run out of ideas, although I'm sure it's a simple solution of getting the settings right. I'd appreciate someone letting me know what the php.ini settings should be (and if necc, and changes to httpd.conf) I should be doing. Thanks in advance.