huh never seen BLSql.dll thats actually really cool, worth looking into
unfortunately i think you can only use it if sql is running on the same server as the blockland install
so setting up an apache server with php and then sending GET/POST requests to the server through PHP and then accessing the SQL through the PHP layer would probably be the best way to go,
be very careful how you setup the php so you dont allow random outsiders to access your sql in a way you wouldn't want to