I'm trying to figure out all the configuration aspects for the following:

I have a Firebird Database running on an XP machine.
I have Apache/PHP/MySQL running on an OS X machine (running another
database app).

I want to pull data from the Firebird database using PHP on the second
machine.

What do I need on the PHP machine in order to connect to the Firebird
machine? What do I need to change in the php.ini?

Thanks.

-James