New to Sql

I have a phpbb forum running on mysql and want to know if I can run another php web page running from the same database on the sql or do I need to run the web page php from another sql database.
I'll have to pay for another sql to be added by my web space provider.

Just to clarify .. I want to run VirtuaNews as the web page and wonder if it can be run from the same mysql as the phpbb forum.